656213214404 has 48 divisors (see below), whose sum is σ = 1326108611520. Its totient is φ = 281295719040.

The previous prime is 656213214379. The next prime is 656213214407. The reversal of 656213214404 is 404412312656.

It is not an unprimeable number, because it can be changed into a prime (656213214407) 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, 5925059 + ... + 6034794.

It is an arithmetic number, because the mean of its divisors is an integer number (27627262740).

Almost surely, 2^656213214404 is an apocalyptic number.

It is an amenable number.

656213214404 is an abundant number, since it is smaller than the sum of its proper divisors (669895397116).

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

656213214404 is a wasteful number, since it uses less digits than its factorization.

656213214404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11959940 (or 11959938 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 38.

The spelling of 656213214404 in words is "six hundred fifty-six billion, two hundred thirteen million, two hundred fourteen thousand, four hundred four".