79919449855 has 8 divisors (see below), whose sum is σ = 109603816992. Its totient is φ = 54801908448.

The previous prime is 79919449843. The next prime is 79919449877. The reversal of 79919449855 is 55894491997.

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

It is a de Polignac number, because none of the positive numbers 2^k-79919449855 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1141706392 + ... + 1141706461.

It is an arithmetic number, because the mean of its divisors is an integer number (13700477124).

Almost surely, 2^79919449855 is an apocalyptic number.

79919449855 is a deficient number, since it is larger than the sum of its proper divisors (29684367137).

79919449855 is a wasteful number, since it uses less digits than its factorization.

79919449855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2283412865.

The product of its digits is 146966400, while the sum is 70.

The spelling of 79919449855 in words is "seventy-nine billion, nine hundred nineteen million, four hundred forty-nine thousand, eight hundred fifty-five".