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30676552861 = 55547552263
BaseRepresentation
bin11100100100011101…
…110000110010011101
32221011220100100102111
4130210131300302131
51000311144142421
622032000554021
72134123253113
oct344435606235
987156310374
1030676552861
1112012129229
125b41622911
132b7b5b5036
1416b023bab3
15be8218ee1
hex724770c9d

30676552861 has 4 divisors (see below), whose sum is σ = 30677160672. Its totient is φ = 30675945052.

The previous prime is 30676552813. The next prime is 30676552867. The reversal of 30676552861 is 16825567603.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16825567603 = 131294274431.

It is a cyclic number.

It is not a de Polignac number, because 30676552861 - 233 = 22086618269 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30676552867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220585 + ... + 331678.

It is an arithmetic number, because the mean of its divisors is an integer number (7669290168).

Almost surely, 230676552861 is an apocalyptic number.

It is an amenable number.

30676552861 is a deficient number, since it is larger than the sum of its proper divisors (607811).

30676552861 is an equidigital number, since it uses as much as digits as its factorization.

30676552861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607810.

The product of its (nonzero) digits is 1814400, while the sum is 49.

The spelling of 30676552861 in words is "thirty billion, six hundred seventy-six million, five hundred fifty-two thousand, eight hundred sixty-one".

Divisors: 1 55547 552263 30676552861