68857020756 has 60 divisors (see below), whose sum is σ = 189479862880. Its totient is φ = 21744320400.

The previous prime is 68857020751. The next prime is 68857020769. The reversal of 68857020756 is 65702075886.

68857020756 is a `hidden beast` number, since 68 + 8 + 570 + 2 + 0 + 7 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68857020751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5586520 + ... + 5598831.

Almost surely, 2^68857020756 is an apocalyptic number.

It is an amenable number.

68857020756 is an abundant number, since it is smaller than the sum of its proper divisors (120622842124).

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

68857020756 is a wasteful number, since it uses less digits than its factorization.

68857020756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11185386 (or 11185375 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 54.

The spelling of 68857020756 in words is "sixty-eight billion, eight hundred fifty-seven million, twenty thousand, seven hundred fifty-six".