68474877936 has 80 divisors (see below), whose sum is σ = 187139808000. Its totient is φ = 21514927104.

The previous prime is 68474877871. The next prime is 68474877973. The reversal of 68474877936 is 63977847486.

It is a happy number.

It is a hoax number, since the sum of its digits (69) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7161 + ... + 370136.

It is an arithmetic number, because the mean of its divisors is an integer number (2339247600).

Almost surely, 2^68474877936 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 68474877936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93569904000).

68474877936 is an abundant number, since it is smaller than the sum of its proper divisors (118664930064).

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

68474877936 is a wasteful number, since it uses less digits than its factorization.

68474877936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377526 (or 377520 counting only the distinct ones).

The product of its digits is 341397504, while the sum is 69.

The spelling of 68474877936 in words is "sixty-eight billion, four hundred seventy-four million, eight hundred seventy-seven thousand, nine hundred thirty-six".