79123261501439 has 8 divisors (see below), whose sum is σ = 79359293440272. Its totient is φ = 78887488230720.

The previous prime is 79123261501393. The next prime is 79123261501451. The reversal of 79123261501439 is 93410516232197.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79123261501439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79123261501489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64054334 + ... + 65277899.

It is an arithmetic number, because the mean of its divisors is an integer number (9919911680034).

Almost surely, 2^{79123261501439} is an apocalyptic number.

79123261501439 is a deficient number, since it is larger than the sum of its proper divisors (236031938833).

79123261501439 is a wasteful number, since it uses less digits than its factorization.

79123261501439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129334057.

The product of its (nonzero) digits is 2449440, while the sum is 53.

The spelling of 79123261501439 in words is "seventy-nine trillion, one hundred twenty-three billion, two hundred sixty-one million, five hundred one thousand, four hundred thirty-nine".