68064960020 has 24 divisors (see below), whose sum is σ = 143529523368. Its totient is φ = 27113011200.

The previous prime is 68064959933. The next prime is 68064960031. The reversal of 68064960020 is 2006946086.

It can be written as a sum of positive squares in 4 ways, for example, as 16646676484 + 51418283536 = 129022^2 + 226756^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 68064960020.

It is a congruent 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, 7055861 + ... + 7065500.

It is an arithmetic number, because the mean of its divisors is an integer number (5980396807).

Almost surely, 2^68064960020 is an apocalyptic number.

It is an amenable number.

68064960020 is an abundant number, since it is smaller than the sum of its proper divisors (75464563348).

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

68064960020 is a wasteful number, since it uses less digits than its factorization.

68064960020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14121611 (or 14121609 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The spelling of 68064960020 in words is "sixty-eight billion, sixty-four million, nine hundred sixty thousand, twenty".