45515644420 has 48 divisors (see below), whose sum is σ = 98981870400. Its totient is φ = 17560135040.

The previous prime is 45515644417. The next prime is 45515644477. The reversal of 45515644420 is 2444651554.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 522771 + ... + 603589.

It is an arithmetic number, because the mean of its divisors is an integer number (2062122300).

Almost surely, 2^45515644420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45515644420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49490935200).

45515644420 is an abundant number, since it is smaller than the sum of its proper divisors (53466225980).

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

45515644420 is a wasteful number, since it uses less digits than its factorization.

45515644420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81828 (or 81826 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 40.

The spelling of 45515644420 in words is "forty-five billion, five hundred fifteen million, six hundred forty-four thousand, four hundred twenty".