656623058460 has 192 divisors, whose sum is σ = 1954311045120. Its totient is φ = 164263092480.

The previous prime is 656623058459. The next prime is 656623058471. The reversal of 656623058460 is 64850326656.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 48549259 + ... + 48562781.

It is an arithmetic number, because the mean of its divisors is an integer number (10178703360).

Almost surely, 2^656623058460 is an apocalyptic number.

656623058460 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 656623058460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (977155522560).

656623058460 is an abundant number, since it is smaller than the sum of its proper divisors (1297687986660).

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

656623058460 is a wasteful number, since it uses less digits than its factorization.

656623058460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13968 (or 13966 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 51.

The spelling of 656623058460 in words is "six hundred fifty-six billion, six hundred twenty-three million, fifty-eight thousand, four hundred sixty".