656521150656 has 56 divisors (see below), whose sum is σ = 1985194912000. Its totient is φ = 187577471232.

The previous prime is 656521150639. The next prime is 656521150657. The reversal of 656521150656 is 656051125656.

It is a tau number, because it is divible by the number of its divisors (56).

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

It is not an unprimeable number, because it can be changed into a prime (656521150657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244240156 + ... + 244242843.

Almost surely, 2^656521150656 is an apocalyptic number.

It is an amenable number.

656521150656 is an abundant number, since it is smaller than the sum of its proper divisors (1328673761344).

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

656521150656 is a wasteful number, since it uses less digits than its factorization.

656521150656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488483021 (or 488483011 counting only the distinct ones).

The product of its (nonzero) digits is 1620000, while the sum is 48.

The spelling of 656521150656 in words is "six hundred fifty-six billion, five hundred twenty-one million, one hundred fifty thousand, six hundred fifty-six".