45642499820 has 12 divisors (see below), whose sum is σ = 95849249664. Its totient is φ = 18256999920.

The previous prime is 45642499757. The next prime is 45642499831. The reversal of 45642499820 is 2899424654.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1141062476 + ... + 1141062515.

It is an arithmetic number, because the mean of its divisors is an integer number (7987437472).

Almost surely, 2^45642499820 is an apocalyptic number.

It is an amenable number.

45642499820 is an abundant number, since it is smaller than the sum of its proper divisors (50206749844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45642499820 is a wasteful number, since it uses less digits than its factorization.

45642499820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2282125000 (or 2282124998 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 53.

The spelling of 45642499820 in words is "forty-five billion, six hundred forty-two million, four hundred ninety-nine thousand, eight hundred twenty".