79061000561555 has 4 divisors (see below), whose sum is σ = 94873200673872. Its totient is φ = 63248800449240.

The previous prime is 79061000561539. The next prime is 79061000561561. The reversal of 79061000561555 is 55516500016097.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 79061000561555 - 2⁴ = 79061000561539 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7906100056151 + ... + 7906100056160.

It is an arithmetic number, because the mean of its divisors is an integer number (23718300168468).

Almost surely, 2^{79061000561555} is an apocalyptic number.

79061000561555 is a deficient number, since it is larger than the sum of its proper divisors (15812200112317).

79061000561555 is a wasteful number, since it uses less digits than its factorization.

79061000561555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15812200112316.

The product of its (nonzero) digits is 1417500, while the sum is 50.

The spelling of 79061000561555 in words is "seventy-nine trillion, sixty-one billion, five hundred sixty-one thousand, five hundred fifty-five".