79840732938 has 32 divisors (see below), whose sum is σ = 165725904960. Its totient is φ = 25612151040.

The previous prime is 79840732901. The next prime is 79840732949. The reversal of 79840732938 is 83923704897.

It is a super-2 number, since 2×79840732938² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 693903 + ... + 800738.

It is an arithmetic number, because the mean of its divisors is an integer number (5178934530).

Almost surely, 2^79840732938 is an apocalyptic number.

79840732938 is an abundant number, since it is smaller than the sum of its proper divisors (85885172022).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79840732938 is a wasteful number, since it uses less digits than its factorization.

79840732938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494982.

The product of its (nonzero) digits is 18289152, while the sum is 60.

The spelling of 79840732938 in words is "seventy-nine billion, eight hundred forty million, seven hundred thirty-two thousand, nine hundred thirty-eight".