79709598427 has 16 divisors (see below), whose sum is σ = 84500960544. Its totient is φ = 75085920000.

The previous prime is 79709598407. The next prime is 79709598443. The reversal of 79709598427 is 72489590797.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79709598427 is a prime.

It is a super-3 number, since 3×79709598427³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79709598407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1824 + ... + 399277.

It is an arithmetic number, because the mean of its divisors is an integer number (5281310034).

Almost surely, 2^79709598427 is an apocalyptic number.

79709598427 is a deficient number, since it is larger than the sum of its proper divisors (4791362117).

79709598427 is a wasteful number, since it uses less digits than its factorization.

79709598427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401310.

The product of its (nonzero) digits is 80015040, while the sum is 67.

The spelling of 79709598427 in words is "seventy-nine billion, seven hundred nine million, five hundred ninety-eight thousand, four hundred twenty-seven".