56699623618 has 16 divisors (see below), whose sum is σ = 92791985184. Its totient is φ = 25769560960.

The previous prime is 56699623601. The next prime is 56699623633. The reversal of 56699623618 is 81632699665.

It is a happy number.

56699623618 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49746 + ... + 340402.

It is an arithmetic number, because the mean of its divisors is an integer number (5799499074).

Almost surely, 2^56699623618 is an apocalyptic number.

56699623618 is a deficient number, since it is larger than the sum of its proper divisors (36092361566).

56699623618 is a wasteful number, since it uses less digits than its factorization.

56699623618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299537.

The product of its digits is 25194240, while the sum is 61.

The spelling of 56699623618 in words is "fifty-six billion, six hundred ninety-nine million, six hundred twenty-three thousand, six hundred eighteen".