215503422252 has 24 divisors (see below), whose sum is σ = 506679805632. Its totient is φ = 71286118800.

The previous prime is 215503422227. The next prime is 215503422293. The reversal of 215503422252 is 252224305512.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68542774 + ... + 68545917.

It is an arithmetic number, because the mean of its divisors is an integer number (21111658568).

Almost surely, 2^215503422252 is an apocalyptic number.

It is an amenable number.

215503422252 is an abundant number, since it is smaller than the sum of its proper divisors (291176383380).

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

215503422252 is a wasteful number, since it uses less digits than its factorization.

215503422252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137088829 (or 137088827 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 33.

Adding to 215503422252 its reverse (252224305512), we get a palindrome (467727727764).

The spelling of 215503422252 in words is "two hundred fifteen billion, five hundred three million, four hundred twenty-two thousand, two hundred fifty-two".