79734561974 has 32 divisors (see below), whose sum is σ = 126039908736. Its totient is φ = 37789242880.

The previous prime is 79734561961. The next prime is 79734562067. The reversal of 79734561974 is 47916543797.

It is a Curzon number.

It is a congruent number.

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, 452492 + ... + 603504.

It is an arithmetic number, because the mean of its divisors is an integer number (3938747148).

Almost surely, 2^79734561974 is an apocalyptic number.

79734561974 is a deficient number, since it is larger than the sum of its proper divisors (46305346762).

79734561974 is a wasteful number, since it uses less digits than its factorization.

79734561974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151240.

The product of its digits is 40007520, while the sum is 62.

The spelling of 79734561974 in words is "seventy-nine billion, seven hundred thirty-four million, five hundred sixty-one thousand, nine hundred seventy-four".