68021526720 has 112 divisors (see below), whose sum is σ = 246820992768. Its totient is φ = 15547776000.

The previous prime is 68021526719. The next prime is 68021526733. The reversal of 68021526720 is 2762512086.

It is a tau number, because it is divible by the number of its divisors (112).

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, 5054406 + ... + 5067845.

It is an arithmetic number, because the mean of its divisors is an integer number (2203758864).

Almost surely, 2^68021526720 is an apocalyptic number.

68021526720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68021526720 is an abundant number, since it is smaller than the sum of its proper divisors (178799466048).

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

68021526720 is a wasteful number, since it uses less digits than its factorization.

68021526720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10122278 (or 10122268 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The spelling of 68021526720 in words is "sixty-eight billion, twenty-one million, five hundred twenty-six thousand, seven hundred twenty".