52118840240 has 20 divisors (see below), whose sum is σ = 121176303744. Its totient is φ = 20847536064.

The previous prime is 52118840233. The next prime is 52118840297. The reversal of 52118840240 is 4204881125.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 52118840240.

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, 325742672 + ... + 325742831.

Almost surely, 2^52118840240 is an apocalyptic number.

It is an amenable number.

52118840240 is an abundant number, since it is smaller than the sum of its proper divisors (69057463504).

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

52118840240 is a wasteful number, since it uses less digits than its factorization.

52118840240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651485516 (or 651485510 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 35.

The spelling of 52118840240 in words is "fifty-two billion, one hundred eighteen million, eight hundred forty thousand, two hundred forty".