45525551218 has 48 divisors (see below), whose sum is σ = 81556292664. Its totient is φ = 18992655360.

The previous prime is 45525551191. The next prime is 45525551219. The reversal of 45525551218 is 81215552554.

It can be written as a sum of positive squares in 4 ways, for example, as 44456457409 + 1069093809 = 210847^2 + 32697^2 .

It is not an unprimeable number, because it can be changed into a prime (45525551219) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1823830 + ... + 1848622.

Almost surely, 2^45525551218 is an apocalyptic number.

45525551218 is a deficient number, since it is larger than the sum of its proper divisors (36030741446).

45525551218 is a wasteful number, since it uses less digits than its factorization.

45525551218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25307 (or 25300 counting only the distinct ones).

The product of its digits is 400000, while the sum is 43.

The spelling of 45525551218 in words is "forty-five billion, five hundred twenty-five million, five hundred fifty-one thousand, two hundred eighteen".