56623505508 has 18 divisors (see below), whose sum is σ = 143131639014. Its totient is φ = 18874501824.

The previous prime is 56623505473. The next prime is 56623505509. The reversal of 56623505508 is 80550532665.

56623505508 is a `hidden beast` number, since 5 + 6 + 62 + 35 + 0 + 550 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 49422625344 + 7200880164 = 222312^2 + 84858^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (56623505509) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 786437541 + ... + 786437612.

It is an arithmetic number, because the mean of its divisors is an integer number (7951757723).

Almost surely, 2^56623505508 is an apocalyptic number.

It is an amenable number.

56623505508 is an abundant number, since it is smaller than the sum of its proper divisors (86508133506).

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

56623505508 is a wasteful number, since it uses less digits than its factorization.

56623505508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1572875163 (or 1572875158 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 45.

The spelling of 56623505508 in words is "fifty-six billion, six hundred twenty-three million, five hundred five thousand, five hundred eight".