68821513860 has 96 divisors (see below), whose sum is σ = 221282611200. Its totient is φ = 15805895040.

The previous prime is 68821513807. The next prime is 68821513897. The reversal of 68821513860 is 6831512886.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2731540 + ... + 2756619.

It is an arithmetic number, because the mean of its divisors is an integer number (2305027200).

Almost surely, 2^68821513860 is an apocalyptic number.

68821513860 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68821513860 is an abundant number, since it is smaller than the sum of its proper divisors (152461097340).

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

68821513860 is a wasteful number, since it uses less digits than its factorization.

68821513860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5488201 (or 5488199 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 48.

The spelling of 68821513860 in words is "sixty-eight billion, eight hundred twenty-one million, five hundred thirteen thousand, eight hundred sixty".