79890445855 has 8 divisors (see below), whose sum is σ = 104583856464. Its totient is φ = 58102142400.

The previous prime is 79890445823. The next prime is 79890445889. The reversal of 79890445855 is 55854409897.

It is a happy number.

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

It is not a de Polignac number, because 79890445855 - 2⁵ = 79890445823 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, 726276726 + ... + 726276835.

It is an arithmetic number, because the mean of its divisors is an integer number (13072982058).

Almost surely, 2^79890445855 is an apocalyptic number.

79890445855 is a deficient number, since it is larger than the sum of its proper divisors (24693410609).

79890445855 is a wasteful number, since it uses less digits than its factorization.

79890445855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1452553577.

The product of its (nonzero) digits is 72576000, while the sum is 64.

The spelling of 79890445855 in words is "seventy-nine billion, eight hundred ninety million, four hundred forty-five thousand, eight hundred fifty-five".