68749882568 has 24 divisors (see below), whose sum is σ = 136047643830. Its totient is φ = 32565732480.

The previous prime is 68749882543. The next prime is 68749882571. The reversal of 68749882568 is 86528894786.

It can be written as a sum of positive squares in only one way, i.e., 40424319364 + 28325563204 = 201058^2 + 168302^2 .

It is a super-2 number, since 2×68749882568² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11899793 + ... + 11905568.

Almost surely, 2^68749882568 is an apocalyptic number.

It is an amenable number.

68749882568 is a deficient number, since it is larger than the sum of its proper divisors (67297761262).

68749882568 is a wasteful number, since it uses less digits than its factorization.

68749882568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23805405 (or 23805382 counting only the distinct ones).

The product of its digits is 371589120, while the sum is 71.

The spelling of 68749882568 in words is "sixty-eight billion, seven hundred forty-nine million, eight hundred eighty-two thousand, five hundred sixty-eight".