56671573686 has 64 divisors (see below), whose sum is σ = 139559121408. Its totient is φ = 14939935488.

The previous prime is 56671573681. The next prime is 56671573753. The reversal of 56671573686 is 68637517665.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56671573681) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1325946 + ... + 1368018.

It is an arithmetic number, because the mean of its divisors is an integer number (2180611272).

Almost surely, 2^56671573686 is an apocalyptic number.

56671573686 is an abundant number, since it is smaller than the sum of its proper divisors (82887547722).

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

56671573686 is a wasteful number, since it uses less digits than its factorization.

56671573686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44565.

The product of its digits is 38102400, while the sum is 60.

The spelling of 56671573686 in words is "fifty-six billion, six hundred seventy-one million, five hundred seventy-three thousand, six hundred eighty-six".