45178423177 has 4 divisors (see below), whose sum is σ = 45414959616. Its totient is φ = 44941886740.

The previous prime is 45178423163. The next prime is 45178423183. The reversal of 45178423177 is 77132487154.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 45178423177 - 2³⁵ = 10818684809 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45178423177.

It is not an unprimeable number, because it can be changed into a prime (45178423127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118267933 + ... + 118268314.

It is an arithmetic number, because the mean of its divisors is an integer number (11353739904).

Almost surely, 2^45178423177 is an apocalyptic number.

It is an amenable number.

45178423177 is a deficient number, since it is larger than the sum of its proper divisors (236536439).

45178423177 is a wasteful number, since it uses less digits than its factorization.

45178423177 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236536438.

The product of its digits is 1317120, while the sum is 49.

The spelling of 45178423177 in words is "forty-five billion, one hundred seventy-eight million, four hundred twenty-three thousand, one hundred seventy-seven".