45521636164 has 27 divisors (see below), whose sum is σ = 80495071293. Its totient is φ = 22525484208.

The previous prime is 45521636131. The next prime is 45521636177. The reversal of 45521636164 is 46163612554.

The square root of 45521636164 is 213358.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 39184202500 + 6337433664 = 197950^2 + 79608^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45521636164.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 45658114 + ... + 45659110.

Almost surely, 2^45521636164 is an apocalyptic number.

45521636164 is the 213358-th square number.

It is an amenable number.

45521636164 is a deficient number, since it is larger than the sum of its proper divisors (34973435129).

45521636164 is an frugal number, since it uses more digits than its factorization.

45521636164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2212 (or 1106 counting only the distinct ones).

The product of its digits is 518400, while the sum is 43.

The spelling of 45521636164 in words is "forty-five billion, five hundred twenty-one million, six hundred thirty-six thousand, one hundred sixty-four".