68862663984 has 40 divisors (see below), whose sum is σ = 187258123840. Its totient is φ = 21746104128.

The previous prime is 68862663977. The next prime is 68862664019. The reversal of 68862663984 is 48936626886.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37752742 + ... + 37754565.

It is an arithmetic number, because the mean of its divisors is an integer number (4681453096).

Almost surely, 2^68862663984 is an apocalyptic number.

It is an amenable number.

68862663984 is an abundant number, since it is smaller than the sum of its proper divisors (118395459856).

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

68862663984 is a wasteful number, since it uses less digits than its factorization.

68862663984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75507337 (or 75507331 counting only the distinct ones).

The product of its digits is 143327232, while the sum is 66.

The spelling of 68862663984 in words is "sixty-eight billion, eight hundred sixty-two million, six hundred sixty-three thousand, nine hundred eighty-four".