79681275698 has 8 divisors (see below), whose sum is σ = 119527905900. Its totient is φ = 39838640400.

The previous prime is 79681275649. The next prime is 79681275721. The reversal of 79681275698 is 89657218697.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 79021145449 + 660130249 = 281107^2 + 25693^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 948353 + ... + 1028948.

Almost surely, 2^79681275698 is an apocalyptic number.

79681275698 is a deficient number, since it is larger than the sum of its proper divisors (39846630202).

79681275698 is a wasteful number, since it uses less digits than its factorization.

79681275698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1997452.

The product of its digits is 91445760, while the sum is 68.

The spelling of 79681275698 in words is "seventy-nine billion, six hundred eighty-one million, two hundred seventy-five thousand, six hundred ninety-eight".