68843590972 has 12 divisors (see below), whose sum is σ = 129743690776. Its totient is φ = 31773965040.

The previous prime is 68843590957. The next prime is 68843591023. The reversal of 68843590972 is 27909534886.

It is a self number, because there is not a number n which added to its sum of digits gives 68843590972.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 661957554 + ... + 661957657.

Almost surely, 2^68843590972 is an apocalyptic number.

It is an amenable number.

68843590972 is a deficient number, since it is larger than the sum of its proper divisors (60900099804).

68843590972 is a wasteful number, since it uses less digits than its factorization.

68843590972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323915228 (or 1323915226 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 61.

The spelling of 68843590972 in words is "sixty-eight billion, eight hundred forty-three million, five hundred ninety thousand, nine hundred seventy-two".