79854201247 has 16 divisors (see below), whose sum is σ = 80491806720. Its totient is φ = 79220266272.

The previous prime is 79854201233. The next prime is 79854201289. The reversal of 79854201247 is 74210245897.

It is a cyclic number.

It is not a de Polignac number, because 79854201247 - 2²³ = 79845812639 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79854201247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79854201227) 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, 90434668 + ... + 90435550.

It is an arithmetic number, because the mean of its divisors is an integer number (5030737920).

Almost surely, 2^79854201247 is an apocalyptic number.

79854201247 is a deficient number, since it is larger than the sum of its proper divisors (637605473).

79854201247 is a wasteful number, since it uses less digits than its factorization.

79854201247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2262.

The product of its (nonzero) digits is 1128960, while the sum is 49.

The spelling of 79854201247 in words is "seventy-nine billion, eight hundred fifty-four million, two hundred one thousand, two hundred forty-seven".