52449818640 has 160 divisors (see below), whose sum is σ = 165175428096. Its totient is φ = 13765301760.

The previous prime is 52449818627. The next prime is 52449818651. The reversal of 52449818640 is 4681894425.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10954327 + ... + 10959113.

Almost surely, 2^52449818640 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 52449818640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82587714048).

52449818640 is an abundant number, since it is smaller than the sum of its proper divisors (112725609456).

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

52449818640 is a wasteful number, since it uses less digits than its factorization.

52449818640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5517 (or 5511 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 51.

The spelling of 52449818640 in words is "fifty-two billion, four hundred forty-nine million, eight hundred eighteen thousand, six hundred forty".