56161012635 has 120 divisors (see below), whose sum is σ = 126119424816. Its totient is φ = 23698604160.

The previous prime is 56161012631. The next prime is 56161012651. The reversal of 56161012635 is 53621016165.

56161012635 is a `hidden beast` number, since 5 + 6 + 1 + 6 + 1 + 0 + 12 + 635 = 666.

It is not a de Polignac number, because 56161012635 - 2² = 56161012631 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56161012635.

It is not an unprimeable number, because it can be changed into a prime (56161012631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 149140 + ... + 366830.

Almost surely, 2^56161012635 is an apocalyptic number.

56161012635 is an abundant number, since it is smaller than the sum of its proper divisors (69958412181).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56161012635 is a wasteful number, since it uses less digits than its factorization.

56161012635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217735 (or 217719 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The spelling of 56161012635 in words is "fifty-six billion, one hundred sixty-one million, twelve thousand, six hundred thirty-five".