45491172999 has 16 divisors (see below), whose sum is σ = 61320336000. Its totient is φ = 29995720416.

The previous prime is 45491172971. The next prime is 45491173027. The reversal of 45491172999 is 99927119454.

It is an interprime number because it is at equal distance from previous prime (45491172971) and next prime (45491173027).

It is not a de Polignac number, because 45491172999 - 2²⁵ = 45457618567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45491172499) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60552 + ... + 307650.

It is an arithmetic number, because the mean of its divisors is an integer number (3832521000).

Almost surely, 2^45491172999 is an apocalyptic number.

45491172999 is a deficient number, since it is larger than the sum of its proper divisors (15829163001).

45491172999 is a wasteful number, since it uses less digits than its factorization.

45491172999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247774.

The product of its digits is 7348320, while the sum is 60.

The spelling of 45491172999 in words is "forty-five billion, four hundred ninety-one million, one hundred seventy-two thousand, nine hundred ninety-nine".