656260621060 has 48 divisors (see below), whose sum is σ = 1503556975872. Its totient is φ = 238620614400.

The previous prime is 656260621013. The next prime is 656260621103. The reversal of 656260621060 is 60126062656.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

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, 2708869 + ... + 2941171.

It is an arithmetic number, because the mean of its divisors is an integer number (31324103664).

Almost surely, 2^656260621060 is an apocalyptic number.

It is an amenable number.

656260621060 is an abundant number, since it is smaller than the sum of its proper divisors (847296354812).

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

656260621060 is a wasteful number, since it uses less digits than its factorization.

656260621060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245164 (or 245162 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 656260621060 in words is "six hundred fifty-six billion, two hundred sixty million, six hundred twenty-one thousand, sixty".