52121670520 has 16 divisors (see below), whose sum is σ = 117273758760. Its totient is φ = 20848668192.

The previous prime is 52121670487. The next prime is 52121670613. The reversal of 52121670520 is 2507612125.

It is a congruent number.

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, 651520842 + ... + 651520921.

Almost surely, 2^52121670520 is an apocalyptic number.

It is an amenable number.

52121670520 is an abundant number, since it is smaller than the sum of its proper divisors (65152088240).

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

52121670520 is a wasteful number, since it uses less digits than its factorization.

52121670520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303041774 (or 1303041770 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

The spelling of 52121670520 in words is "fifty-two billion, one hundred twenty-one million, six hundred seventy thousand, five hundred twenty".