56623641012 has 36 divisors (see below), whose sum is σ = 147000416836. Its totient is φ = 18364423680.

The previous prime is 56623640981. The next prime is 56623641017. The reversal of 56623641012 is 21014632665.

56623641012 is a `hidden beast` number, since 5 + 6 + 6 + 2 + 3 + 641 + 0 + 1 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 52419934116 + 4203706896 = 228954^2 + 64836^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56623641017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21253789 + ... + 21256452.

Almost surely, 2^56623641012 is an apocalyptic number.

It is an amenable number.

56623641012 is an abundant number, since it is smaller than the sum of its proper divisors (90376775824).

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

56623641012 is a wasteful number, since it uses less digits than its factorization.

56623641012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42510288 (or 42510283 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 56623641012 in words is "fifty-six billion, six hundred twenty-three million, six hundred forty-one thousand, twelve".