79729029842 has 54 divisors (see below), whose sum is σ = 152974944549. Its totient is φ = 31051278720.

The previous prime is 79729029659. The next prime is 79729029869. The reversal of 79729029842 is 24892092797.

It can be written as a sum of positive squares in 2 ways, for example, as 78859310761 + 869719081 = 280819^2 + 29491^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=199661.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 30746498 + ... + 30749090.

Almost surely, 2^79729029842 is an apocalyptic number.

79729029842 is a deficient number, since it is larger than the sum of its proper divisors (73245914707).

79729029842 is an equidigital number, since it uses as much as digits as its factorization.

79729029842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5224 (or 2613 counting only the distinct ones).

The product of its (nonzero) digits is 9144576, while the sum is 59.

The spelling of 79729029842 in words is "seventy-nine billion, seven hundred twenty-nine million, twenty-nine thousand, eight hundred forty-two".