45512820513 has 20 divisors (see below), whose sum is σ = 69646543428. Its totient is φ = 29601832320.

The previous prime is 45512820503. The next prime is 45512820523. The reversal of 45512820513 is 31502821554.

45512820513 is a `hidden beast` number, since 4 + 55 + 12 + 82 + 0 + 513 = 666.

It is an interprime number because it is at equal distance from previous prime (45512820503) and next prime (45512820523).

It can be written as a sum of positive squares in 2 ways, for example, as 14955333264 + 30557487249 = 122292^2 + 174807^2 .

It is not a de Polignac number, because 45512820513 - 2⁴ = 45512820497 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45512820503) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6848956 + ... + 6855597.

Almost surely, 2^45512820513 is an apocalyptic number.

It is an amenable number.

45512820513 is a deficient number, since it is larger than the sum of its proper divisors (24133722915).

45512820513 is a wasteful number, since it uses less digits than its factorization.

45512820513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13704606 (or 13704597 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The spelling of 45512820513 in words is "forty-five billion, five hundred twelve million, eight hundred twenty thousand, five hundred thirteen".