52391638220 has 24 divisors (see below), whose sum is σ = 110033145600. Its totient is φ = 20954616192.

The previous prime is 52391638193. The next prime is 52391638223. The reversal of 52391638220 is 2283619325.

It is not an unprimeable number, because it can be changed into a prime (52391638223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92501 + ... + 336659.

It is an arithmetic number, because the mean of its divisors is an integer number (4584714400).

Almost surely, 2^52391638220 is an apocalyptic number.

It is an amenable number.

52391638220 is an abundant number, since it is smaller than the sum of its proper divisors (57641507380).

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

52391638220 is a wasteful number, since it uses less digits than its factorization.

52391638220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254897 (or 254895 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 41.

The spelling of 52391638220 in words is "fifty-two billion, three hundred ninety-one million, six hundred thirty-eight thousand, two hundred twenty".