45897920644 has 9 divisors (see below), whose sum is σ = 80322110967. Its totient is φ = 22948746084.

The previous prime is 45897920609. The next prime is 45897920707. The reversal of 45897920644 is 44602979854.

The square root of 45897920644 is 214238.

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

45897920644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 374917 + ... + 482035.

Almost surely, 2^45897920644 is an apocalyptic number.

45897920644 is the 214238-th square number.

It is an amenable number.

45897920644 is a deficient number, since it is larger than the sum of its proper divisors (34424190323).

45897920644 is an frugal number, since it uses more digits than its factorization.

45897920644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214242 (or 107121 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 58.

The spelling of 45897920644 in words is "forty-five billion, eight hundred ninety-seven million, nine hundred twenty thousand, six hundred forty-four".