79205838381 has 12 divisors (see below), whose sum is σ = 114658785852. Its totient is φ = 52688344896.

The previous prime is 79205838379. The next prime is 79205838389. The reversal of 79205838381 is 18383850297.

79205838381 is a `hidden beast` number, since 7 + 9 + 20 + 583 + 8 + 38 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 74226278025 + 4979560356 = 272445^2 + 70566^2 .

It is not a de Polignac number, because 79205838381 - 2¹ = 79205838379 is a prime.

It is a super-2 number, since 2×79205838381² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79205838389) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9624606 + ... + 9632831.

It is an arithmetic number, because the mean of its divisors is an integer number (9554898821).

Almost surely, 2^79205838381 is an apocalyptic number.

It is an amenable number.

79205838381 is a deficient number, since it is larger than the sum of its proper divisors (35452947471).

79205838381 is a wasteful number, since it uses less digits than its factorization.

79205838381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19257900 (or 19257897 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 79205838381 in words is "seventy-nine billion, two hundred five million, eight hundred thirty-eight thousand, three hundred eighty-one".