56651661606 has 32 divisors (see below), whose sum is σ = 119023084800. Its totient is φ = 17941614944.

The previous prime is 56651661601. The next prime is 56651661631. The reversal of 56651661606 is 60616615665.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56651661601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1357020 + ... + 1398143.

It is an arithmetic number, because the mean of its divisors is an integer number (3719471400).

Almost surely, 2^56651661606 is an apocalyptic number.

56651661606 is an abundant number, since it is smaller than the sum of its proper divisors (62371423194).

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

56651661606 is a wasteful number, since it uses less digits than its factorization.

56651661606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2755340.

The product of its (nonzero) digits is 1166400, while the sum is 48.

The spelling of 56651661606 in words is "fifty-six billion, six hundred fifty-one million, six hundred sixty-one thousand, six hundred six".