215440404044512 has 24 divisors (see below), whose sum is σ = 424487885850000. Its totient is φ = 107633956844544.

The previous prime is 215440404044473. The next prime is 215440404044513.

215440404044512 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215440404044513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2695121212 + ... + 2695201147.

It is an arithmetic number, because the mean of its divisors is an integer number (17686995243750).

Almost surely, 2^{215440404044512} is an apocalyptic number.

It is an amenable number.

215440404044512 is a deficient number, since it is larger than the sum of its proper divisors (209047481805488).

215440404044512 is a wasteful number, since it uses less digits than its factorization.

215440404044512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5390323618 (or 5390323610 counting only the distinct ones).

The product of its (nonzero) digits is 409600, while the sum is 40.

It can be divided in two parts, 21544040 and 4044512, that added together give a palindrome (25588552).

The spelling of 215440404044512 in words is "two hundred fifteen trillion, four hundred forty billion, four hundred four million, forty-four thousand, five hundred twelve".