79944386354 has 64 divisors (see below), whose sum is σ = 146230272000. Its totient is φ = 31997991168.

The previous prime is 79944386351. The next prime is 79944386381. The reversal of 79944386354 is 45368344997.

It is a super-2 number, since 2×79944386354² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (79944386351) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 33322847 + ... + 33325245.

It is an arithmetic number, because the mean of its divisors is an integer number (2284848000).

Almost surely, 2^79944386354 is an apocalyptic number.

79944386354 is a deficient number, since it is larger than the sum of its proper divisors (66285885646).

79944386354 is a wasteful number, since it uses less digits than its factorization.

79944386354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3447.

The product of its digits is 78382080, while the sum is 62.

The spelling of 79944386354 in words is "seventy-nine billion, nine hundred forty-four million, three hundred eighty-six thousand, three hundred fifty-four".