56681906192 has 160 divisors (see below), whose sum is σ = 123812789760. Its totient is φ = 24999321600.

The previous prime is 56681906153. The next prime is 56681906201. The reversal of 56681906192 is 29160918665.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68871893 + ... + 68872715.

It is an arithmetic number, because the mean of its divisors is an integer number (773829936).

Almost surely, 2^56681906192 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56681906192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61906394880).

56681906192 is an abundant number, since it is smaller than the sum of its proper divisors (67130883568).

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

56681906192 is a wasteful number, since it uses less digits than its factorization.

56681906192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081 (or 1075 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 53.

The spelling of 56681906192 in words is "fifty-six billion, six hundred eighty-one million, nine hundred six thousand, one hundred ninety-two".