79448440155 has 32 divisors (see below), whose sum is σ = 145375394304. Its totient is φ = 36294725376.

The previous prime is 79448440091. The next prime is 79448440171. The reversal of 79448440155 is 55104484497.

It is not a de Polignac number, because 79448440155 - 2⁶ = 79448440091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79448440098 and 79448440107.

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, 99394 + ... + 410823.

It is an arithmetic number, because the mean of its divisors is an integer number (4542981072).

Almost surely, 2^79448440155 is an apocalyptic number.

79448440155 is a deficient number, since it is larger than the sum of its proper divisors (65926954149).

79448440155 is a wasteful number, since it uses less digits than its factorization.

79448440155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511715.

The product of its (nonzero) digits is 3225600, while the sum is 51.

The spelling of 79448440155 in words is "seventy-nine billion, four hundred forty-eight million, four hundred forty thousand, one hundred fifty-five".