79951114640 has 40 divisors (see below), whose sum is σ = 186849519288. Its totient is φ = 31814737920.

The previous prime is 79951114613. The next prime is 79951114717. The reversal of 79951114640 is 4641115997.

It can be written as a sum of positive squares in 4 ways, for example, as 18995454976 + 60955659664 = 137824^2 + 246892^2 .

It is a tau number, because it is divible by the number of its divisors (40).

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 7 ways as a sum of consecutive naturals, for example, 2573651 + ... + 2604530.

Almost surely, 2^79951114640 is an apocalyptic number.

It is an amenable number.

79951114640 is an abundant number, since it is smaller than the sum of its proper divisors (106898404648).

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

79951114640 is a wasteful number, since it uses less digits than its factorization.

79951114640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5178387 (or 5178381 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 47.

The spelling of 79951114640 in words is "seventy-nine billion, nine hundred fifty-one million, one hundred fourteen thousand, six hundred forty".