215515325324432 has 20 divisors (see below), whose sum is σ = 477212506075776. Its totient is φ = 92363710853280.

The previous prime is 215515325324423. The next prime is 215515325324443. The reversal of 215515325324432 is 234423523515512.

It is a super-2 number, since 2×215515325324432² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 962121987944 + ... + 962121988167.

Almost surely, 2^{215515325324432} is an apocalyptic number.

It is an amenable number.

215515325324432 is an abundant number, since it is smaller than the sum of its proper divisors (261697180751344).

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

215515325324432 is a wasteful number, since it uses less digits than its factorization.

215515325324432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1924243976126 (or 1924243976120 counting only the distinct ones).

The product of its digits is 4320000, while the sum is 47.

Adding to 215515325324432 its reverse (234423523515512), we get a palindrome (449938848839944).

The spelling of 215515325324432 in words is "two hundred fifteen trillion, five hundred fifteen billion, three hundred twenty-five million, three hundred twenty-four thousand, four hundred thirty-two".