79707906881 has 8 divisors (see below), whose sum is σ = 80420561760. Its totient is φ = 78997241088.

The previous prime is 79707906871. The next prime is 79707906899. The reversal of 79707906881 is 18860970797.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79707906881 is a prime.

It is a super-2 number, since 2×79707906881² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79707906871) by changing a digit.

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, 416711 + ... + 577116.

It is an arithmetic number, because the mean of its divisors is an integer number (10052570220).

Almost surely, 2^79707906881 is an apocalyptic number.

It is an amenable number.

79707906881 is a deficient number, since it is larger than the sum of its proper divisors (712654879).

79707906881 is a wasteful number, since it uses less digits than its factorization.

79707906881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994543.

The product of its (nonzero) digits is 10668672, while the sum is 62.

The spelling of 79707906881 in words is "seventy-nine billion, seven hundred seven million, nine hundred six thousand, eight hundred eighty-one".