656062490691072 has 240 divisors, whose sum is σ = 1963623889058832. Its totient is φ = 218681295298560.

The previous prime is 656062490691037. The next prime is 656062490691133. The reversal of 656062490691072 is 270196094260656.

656062490691072 is a `hidden beast` number, since 6 + 5 + 6 + 0 + 6 + 2 + 490 + 69 + 10 + 72 = 666.

It is a super-2 number, since 2×656062490691072² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7086315822 + ... + 7086408402.

Almost surely, 2^{656062490691072} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 656062490691072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (981811944529416).

656062490691072 is an abundant number, since it is smaller than the sum of its proper divisors (1307561398367760).

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

656062490691072 is an frugal number, since it uses more digits than its factorization.

656062490691072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149571 (or 149543 counting only the distinct ones).

The product of its (nonzero) digits is 58786560, while the sum is 63.

The spelling of 656062490691072 in words is "six hundred fifty-six trillion, sixty-two billion, four hundred ninety million, six hundred ninety-one thousand, seventy-two".