79818366165055 has 32 divisors (see below), whose sum is σ = 109687300300800. Its totient is φ = 54621643127040.

The previous prime is 79818366165049. The next prime is 79818366165067. The reversal of 79818366165055 is 55056166381897.

It is not a de Polignac number, because 79818366165055 - 2³ = 79818366165047 is a prime.

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, 35290146 + ... + 37483744.

It is an arithmetic number, because the mean of its divisors is an integer number (3427728134400).

Almost surely, 2^{79818366165055} is an apocalyptic number.

79818366165055 is a deficient number, since it is larger than the sum of its proper divisors (29868934135745).

79818366165055 is a wasteful number, since it uses less digits than its factorization.

79818366165055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2195719.

The product of its (nonzero) digits is 326592000, while the sum is 70.

The spelling of 79818366165055 in words is "seventy-nine trillion, eight hundred eighteen billion, three hundred sixty-six million, one hundred sixty-five thousand, fifty-five".