52665207820 has 12 divisors (see below), whose sum is σ = 110596936464. Its totient is φ = 21066083120.

The previous prime is 52665207811. The next prime is 52665207853. The reversal of 52665207820 is 2870256625.

It is a super-2 number, since 2×52665207820² (a number of 22 digits) contains 22 as substring.

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, 1316630176 + ... + 1316630215.

It is an arithmetic number, because the mean of its divisors is an integer number (9216411372).

Almost surely, 2^52665207820 is an apocalyptic number.

It is an amenable number.

52665207820 is an abundant number, since it is smaller than the sum of its proper divisors (57931728644).

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

52665207820 is a wasteful number, since it uses less digits than its factorization.

52665207820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2633260400 (or 2633260398 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 43.

The spelling of 52665207820 in words is "fifty-two billion, six hundred sixty-five million, two hundred seven thousand, eight hundred twenty".