79219865055 has 32 divisors (see below), whose sum is σ = 130160369664. Its totient is φ = 41126956416.

The previous prime is 79219865047. The next prime is 79219865083. The reversal of 79219865055 is 55056891297.

It is a happy number.

It is not a de Polignac number, because 79219865055 - 2³ = 79219865047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79219864986 and 79219865004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 291349 + ... + 493278.

It is an arithmetic number, because the mean of its divisors is an integer number (4067511552).

Almost surely, 2^79219865055 is an apocalyptic number.

79219865055 is a deficient number, since it is larger than the sum of its proper divisors (50940504609).

79219865055 is a wasteful number, since it uses less digits than its factorization.

79219865055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784815.

The product of its (nonzero) digits is 6804000, while the sum is 57.

The spelling of 79219865055 in words is "seventy-nine billion, two hundred nineteen million, eight hundred sixty-five thousand, fifty-five".