68686775564 has 24 divisors (see below), whose sum is σ = 131337163776. Its totient is φ = 31171770000.

The previous prime is 68686775557. The next prime is 68686775593. The reversal of 68686775564 is 46557768686.

68686775564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 68686775494 and 68686775503.

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, 1209212 + ... + 1264739.

It is an arithmetic number, because the mean of its divisors is an integer number (5472381824).

Almost surely, 2^68686775564 is an apocalyptic number.

It is an amenable number.

68686775564 is a deficient number, since it is larger than the sum of its proper divisors (62650388212).

68686775564 is a wasteful number, since it uses less digits than its factorization.

68686775564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2474597 (or 2474595 counting only the distinct ones).

The product of its digits is 406425600, while the sum is 68.

The spelling of 68686775564 in words is "sixty-eight billion, six hundred eighty-six million, seven hundred seventy-five thousand, five hundred sixty-four".