79612921239 has 8 divisors (see below), whose sum is σ = 106853546112. Its totient is φ = 52723788600.

The previous prime is 79612921237. The next prime is 79612921243. The reversal of 79612921239 is 93212921697.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 79612921239 - 2¹ = 79612921237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79612921191 and 79612921200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79612921237) 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 7 ways as a sum of consecutive naturals, for example, 87872529 + ... + 87873434.

It is an arithmetic number, because the mean of its divisors is an integer number (13356693264).

Almost surely, 2^79612921239 is an apocalyptic number.

79612921239 is a deficient number, since it is larger than the sum of its proper divisors (27240624873).

79612921239 is a wasteful number, since it uses less digits than its factorization.

79612921239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175746117.

The product of its digits is 734832, while the sum is 51.

The spelling of 79612921239 in words is "seventy-nine billion, six hundred twelve million, nine hundred twenty-one thousand, two hundred thirty-nine".