68813880976 has 15 divisors (see below), whose sum is σ = 133328927433. Its totient is φ = 34406415840.

The previous prime is 68813880917. The next prime is 68813880983. The reversal of 68813880976 is 67908831886.

The square root of 68813880976 is 262324.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1753599376 + 67060281600 = 41876^2 + 258960^2 .

It is a Duffinian number.

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 2 ways as a sum of consecutive naturals, for example, 1016506 + ... + 1082086.

Almost surely, 2^68813880976 is an apocalyptic number.

68813880976 is the 262324-th square number.

It is an amenable number.

68813880976 is a deficient number, since it is larger than the sum of its proper divisors (64515046457).

68813880976 is an frugal number, since it uses more digits than its factorization.

68813880976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131170 (or 65583 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 64.

Multiplying 68813880976 by its sum of digits (64), we get a square (4404088382464 = 2098592²).

The spelling of 68813880976 in words is "sixty-eight billion, eight hundred thirteen million, eight hundred eighty thousand, nine hundred seventy-six".