52103891520 has 560 divisors, whose sum is σ = 196353379200. Its totient is φ = 13078609920.

The previous prime is 52103891513. The next prime is 52103891533. The reversal of 52103891520 is 2519830125.

52103891520 is a `hidden beast` number, since 5 + 2 + 10 + 38 + 91 + 520 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 118687461 + ... + 118687899.

Almost surely, 2^52103891520 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 52103891520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98176689600).

52103891520 is an abundant number, since it is smaller than the sum of its proper divisors (144249487680).

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

52103891520 is a wasteful number, since it uses less digits than its factorization.

52103891520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728 (or 709 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The spelling of 52103891520 in words is "fifty-two billion, one hundred three million, eight hundred ninety-one thousand, five hundred twenty".