56643571040016 has 80 divisors (see below), whose sum is σ = 147279397388288. Its totient is φ = 18758617113600.

The previous prime is 56643571039963. The next prime is 56643571040099. The reversal of 56643571040016 is 61004017534665.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61268556 + ... + 62186196.

Almost surely, 2^{56643571040016} is an apocalyptic number.

It is an amenable number.

56643571040016 is an abundant number, since it is smaller than the sum of its proper divisors (90635826348272).

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

56643571040016 is a wasteful number, since it uses less digits than its factorization.

56643571040016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926000 (or 925994 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 48.

The spelling of 56643571040016 in words is "fifty-six trillion, six hundred forty-three billion, five hundred seventy-one million, forty thousand, sixteen".