21412514324415 has 16 divisors (see below), whose sum is σ = 35056767639168. Its totient is φ = 11154426066336.

The previous prime is 21412514324389. The next prime is 21412514324437. The reversal of 21412514324415 is 51442341521412.

It is a happy number.

It is not a de Polignac number, because 21412514324415 - 2¹² = 21412514320319 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16598847669 + ... + 16598848958.

It is an arithmetic number, because the mean of its divisors is an integer number (2191047977448).

Almost surely, 2^{21412514324415} is an apocalyptic number.

21412514324415 is a deficient number, since it is larger than the sum of its proper divisors (13644253314753).

21412514324415 is a wasteful number, since it uses less digits than its factorization.

21412514324415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33197696678.

The product of its digits is 153600, while the sum is 39.

Adding to 21412514324415 its reverse (51442341521412), we get a palindrome (72854855845827).

The spelling of 21412514324415 in words is "twenty-one trillion, four hundred twelve billion, five hundred fourteen million, three hundred twenty-four thousand, four hundred fifteen".