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30447424991871 = 32127131203344787
BaseRepresentation
bin1101110110001000101111…
…11100110111001001111111
310222210202010101202100000100
412323010113330313021333
512442322311244214441
6144431204241332143
76261516401151516
oct673042774671177
9128722111670010
1030447424991871
119779753710808
1234b8ab9037053
1313cb2451b7954
1477393dca567d
1537c019e71cb6
hex1bb117f3727f

30447424991871 has 24 divisors (see below), whose sum is σ = 44664275994624. Its totient is φ = 19984725568080.

The previous prime is 30447424991827. The next prime is 30447424991899. The reversal of 30447424991871 is 17819942474403.

30447424991871 is a `hidden beast` number, since 3 + 0 + 4 + 4 + 74 + 2 + 499 + 1 + 8 + 71 = 666.

It is not a de Polignac number, because 30447424991871 - 221 = 30447422894719 is a prime.

It is a super-2 number, since 2×304474249918712 (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30447424991799 and 30447424991808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30447424991801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 101522661 + ... + 101822126.

It is an arithmetic number, because the mean of its divisors is an integer number (1861011499776).

Almost surely, 230447424991871 is an apocalyptic number.

30447424991871 is a deficient number, since it is larger than the sum of its proper divisors (14216851002753).

30447424991871 is a wasteful number, since it uses less digits than its factorization.

30447424991871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203345051 (or 203345048 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 63.

The spelling of 30447424991871 in words is "thirty trillion, four hundred forty-seven billion, four hundred twenty-four million, nine hundred ninety-one thousand, eight hundred seventy-one".

Divisors: 1 3 9 127 131 381 393 1143 1179 16637 49911 149733 203344787 610034361 1830103083 25824787949 26638167097 77474363847 79914501291 232423091541 239743503873 3383047221319 10149141663957 30447424991871