215232413144 has 32 divisors (see below), whose sum is σ = 464578843680. Its totient is φ = 91569156864.

The previous prime is 215232413141. The next prime is 215232413167. The reversal of 215232413144 is 441314232512.

It is a self number, because there is not a number n which added to its sum of digits gives 215232413144.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215232413141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14019467 + ... + 14034810.

It is an arithmetic number, because the mean of its divisors is an integer number (14518088865).

Almost surely, 2^215232413144 is an apocalyptic number.

It is an amenable number.

215232413144 is an abundant number, since it is smaller than the sum of its proper divisors (249346430536).

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

215232413144 is a wasteful number, since it uses less digits than its factorization.

215232413144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28054427 (or 28054423 counting only the distinct ones).

The product of its digits is 23040, while the sum is 32.

Adding to 215232413144 its reverse (441314232512), we get a palindrome (656546645656).

The spelling of 215232413144 in words is "two hundred fifteen billion, two hundred thirty-two million, four hundred thirteen thousand, one hundred forty-four".