215023145215252 has 48 divisors (see below), whose sum is σ = 435212589772800. Its totient is φ = 91927557128160.

The previous prime is 215023145215199. The next prime is 215023145215283. The reversal of 215023145215252 is 252512541320512.

It is a super-2 number, since 2×215023145215252² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 925080628 + ... + 925313035.

It is an arithmetic number, because the mean of its divisors is an integer number (9066928953600).

Almost surely, 2^{215023145215252} is an apocalyptic number.

215023145215252 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

215023145215252 is an abundant number, since it is smaller than the sum of its proper divisors (220189444557548).

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

215023145215252 is a wasteful number, since it uses less digits than its factorization.

215023145215252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1850393836 (or 1850393834 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 40.

Adding to 215023145215252 its reverse (252512541320512), we get a palindrome (467535686535764).

The spelling of 215023145215252 in words is "two hundred fifteen trillion, twenty-three billion, one hundred forty-five million, two hundred fifteen thousand, two hundred fifty-two".