56728508650 has 36 divisors (see below), whose sum is σ = 115979338566. Its totient is φ = 20628546400.

The previous prime is 56728508633. The next prime is 56728508671. The reversal of 56728508650 is 5680582765.

It can be written as a sum of positive squares in 3 ways, for example, as 46973193289 + 9755315361 = 216733^2 + 98769^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4682257 + ... + 4694356.

Almost surely, 2^56728508650 is an apocalyptic number.

56728508650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

56728508650 is an abundant number, since it is smaller than the sum of its proper divisors (59250829916).

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

56728508650 is a wasteful number, since it uses less digits than its factorization.

56728508650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9376647 (or 9376631 counting only the distinct ones).

The product of its (nonzero) digits is 4032000, while the sum is 52.

The spelling of 56728508650 in words is "fifty-six billion, seven hundred twenty-eight million, five hundred eight thousand, six hundred fifty".