45399184538 has 32 divisors (see below), whose sum is σ = 71901388800. Its totient is φ = 21468754944.

The previous prime is 45399184499. The next prime is 45399184549. The reversal of 45399184538 is 83548199354.

It is a happy number.

It is a super-2 number, since 2×45399184538² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 542906 + ... + 620922.

It is an arithmetic number, because the mean of its divisors is an integer number (2246918400).

Almost surely, 2^45399184538 is an apocalyptic number.

45399184538 is a deficient number, since it is larger than the sum of its proper divisors (26502204262).

45399184538 is a wasteful number, since it uses less digits than its factorization.

45399184538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78254.

The product of its digits is 18662400, while the sum is 59.

The spelling of 45399184538 in words is "forty-five billion, three hundred ninety-nine million, one hundred eighty-four thousand, five hundred thirty-eight".