52521015640 has 16 divisors (see below), whose sum is σ = 118172285280. Its totient is φ = 21008406240.

The previous prime is 52521015629. The next prime is 52521015671. The reversal of 52521015640 is 4651012525.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 656512656 + ... + 656512735.

It is an arithmetic number, because the mean of its divisors is an integer number (7385767830).

Almost surely, 2^52521015640 is an apocalyptic number.

It is an amenable number.

52521015640 is an abundant number, since it is smaller than the sum of its proper divisors (65651269640).

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

52521015640 is a wasteful number, since it uses less digits than its factorization.

52521015640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313025402 (or 1313025398 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

The spelling of 52521015640 in words is "fifty-two billion, five hundred twenty-one million, fifteen thousand, six hundred forty".