45658161872 has 40 divisors (see below), whose sum is σ = 88827267816. Its totient is φ = 22735110656.

The previous prime is 45658161847. The next prime is 45658161881. The reversal of 45658161872 is 27816185654.

It can be written as a sum of positive squares in 4 ways, for example, as 2558741056 + 43099420816 = 50584^2 + 207604^2 .

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9359498 + ... + 9364374.

Almost surely, 2^45658161872 is an apocalyptic number.

It is an amenable number.

45658161872 is a deficient number, since it is larger than the sum of its proper divisors (43169105944).

45658161872 is a wasteful number, since it uses less digits than its factorization.

45658161872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7175 (or 7169 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 53.

The spelling of 45658161872 in words is "forty-five billion, six hundred fifty-eight million, one hundred sixty-one thousand, eight hundred seventy-two".