52638991140 has 48 divisors (see below), whose sum is σ = 148693523328. Its totient is φ = 13912840704.

The previous prime is 52638991117. The next prime is 52638991159. The reversal of 52638991140 is 4119983625.

It is a self number, because there is not a number n which added to its sum of digits gives 52638991140.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3875152 + ... + 3888711.

It is an arithmetic number, because the mean of its divisors is an integer number (3097781736).

Almost surely, 2^52638991140 is an apocalyptic number.

It is an amenable number.

52638991140 is an abundant number, since it is smaller than the sum of its proper divisors (96054532188).

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

52638991140 is a wasteful number, since it uses less digits than its factorization.

52638991140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7763988 (or 7763986 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 48.

The spelling of 52638991140 in words is "fifty-two billion, six hundred thirty-eight million, nine hundred ninety-one thousand, one hundred forty".