656412200400 has 240 divisors, whose sum is σ = 2297085834240. Its totient is φ = 158906611200.

The previous prime is 656412200383. The next prime is 656412200413. The reversal of 656412200400 is 4002214656.

656412200400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9456219 + ... + 9525381.

It is an arithmetic number, because the mean of its divisors is an integer number (9571190976).

Almost surely, 2^656412200400 is an apocalyptic number.

656412200400 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 656412200400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1148542917120).

656412200400 is an abundant number, since it is smaller than the sum of its proper divisors (1640673633840).

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

656412200400 is a wasteful number, since it uses less digits than its factorization.

656412200400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69914 (or 69903 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The spelling of 656412200400 in words is "six hundred fifty-six billion, four hundred twelve million, two hundred thousand, four hundred".