52155963621 has 12 divisors (see below), whose sum is σ = 75470211648. Its totient is φ = 34708879464.

The previous prime is 52155963619. The next prime is 52155963647. The reversal of 52155963621 is 12636955125.

52155963621 is a `hidden beast` number, since 5 + 2 + 1 + 5 + 5 + 9 + 636 + 2 + 1 = 666.

52155963621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 52155963621 - 2¹ = 52155963619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52155963221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5141565 + ... + 5151698.

It is an arithmetic number, because the mean of its divisors is an integer number (6289184304).

Almost surely, 2^52155963621 is an apocalyptic number.

It is an amenable number.

52155963621 is a deficient number, since it is larger than the sum of its proper divisors (23314248027).

52155963621 is a wasteful number, since it uses less digits than its factorization.

52155963621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10293832 (or 10293829 counting only the distinct ones).

The product of its digits is 486000, while the sum is 45.

The spelling of 52155963621 in words is "fifty-two billion, one hundred fifty-five million, nine hundred sixty-three thousand, six hundred twenty-one".