656213215548 has 48 divisors (see below), whose sum is σ = 1670417078400. Its totient is φ = 198845803200.

The previous prime is 656213215529. The next prime is 656213215549. The reversal of 656213215548 is 845512312656.

It is a junction number, because it is equal to n+sod(n) for n = 656213215497 and 656213215506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656213215549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5044038 + ... + 5172498.

It is an arithmetic number, because the mean of its divisors is an integer number (34800355800).

Almost surely, 2^656213215548 is an apocalyptic number.

It is an amenable number.

656213215548 is an abundant number, since it is smaller than the sum of its proper divisors (1014203862852).

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

656213215548 is a wasteful number, since it uses less digits than its factorization.

656213215548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167178 (or 167176 counting only the distinct ones).

The product of its digits is 1728000, while the sum is 48.

The spelling of 656213215548 in words is "six hundred fifty-six billion, two hundred thirteen million, two hundred fifteen thousand, five hundred forty-eight".