79898730613 has 8 divisors (see below), whose sum is σ = 86162184248. Its totient is φ = 73652048064.

The previous prime is 79898730599. The next prime is 79898730697. The reversal of 79898730613 is 31603789897.

It can be written as a sum of positive squares in 4 ways, for example, as 2957401924 + 76941328689 = 54382^2 + 277383^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 79898730613 - 2²¹ = 79896633461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79898730413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4182870 + ... + 4201927.

It is an arithmetic number, because the mean of its divisors is an integer number (10770273031).

Almost surely, 2^79898730613 is an apocalyptic number.

It is an amenable number.

79898730613 is a deficient number, since it is larger than the sum of its proper divisors (6263453635).

79898730613 is a wasteful number, since it uses less digits than its factorization.

79898730613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8385543.

The product of its (nonzero) digits is 13716864, while the sum is 61.

The spelling of 79898730613 in words is "seventy-nine billion, eight hundred ninety-eight million, seven hundred thirty thousand, six hundred thirteen".