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30945182855 = 5311934332389
BaseRepresentation
bin11100110100011110…
…100000010010000111
32221212121211011111112
4130310132200102013
51001333431322410
622114354355235
72143564466666
oct346436402207
987777734445
1030945182855
111213a826994
125bb758bb1b
132bc214b3b2
1416d7ba6ddd
15c11acd105
hex7347a0487

30945182855 has 32 divisors (see below), whose sum is σ = 38635860480. Its totient is φ = 23768432640.

The previous prime is 30945182809. The next prime is 30945182857. The reversal of 30945182855 is 55828154903.

It is not a de Polignac number, because 30945182855 - 224 = 30928405639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30945182857) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12952001 + ... + 12954389.

It is an arithmetic number, because the mean of its divisors is an integer number (1207370640).

Almost surely, 230945182855 is an apocalyptic number.

30945182855 is a deficient number, since it is larger than the sum of its proper divisors (7690677625).

30945182855 is a wasteful number, since it uses less digits than its factorization.

30945182855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3051.

The product of its (nonzero) digits is 1728000, while the sum is 50.

The spelling of 30945182855 in words is "thirty billion, nine hundred forty-five million, one hundred eighty-two thousand, eight hundred fifty-five".

Divisors: 1 5 31 155 193 433 965 2165 2389 5983 11945 13423 29915 67115 74059 83569 370295 417845 461077 1034437 2305385 2590639 5172185 12953195 14293387 32067547 71466935 160337735 199646341 998231705 6189036571 30945182855