21214414554634 has 16 divisors (see below), whose sum is σ = 36429522792768. Its totient is φ = 9076403205792.

The previous prime is 21214414554617. The next prime is 21214414554659. The reversal of 21214414554634 is 43645541441212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1290720339 + ... + 1290736774.

It is an arithmetic number, because the mean of its divisors is an integer number (2276845174548).

Almost surely, 2^{21214414554634} is an apocalyptic number.

21214414554634 is a deficient number, since it is larger than the sum of its proper divisors (15215108238134).

21214414554634 is a wasteful number, since it uses less digits than its factorization.

21214414554634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2581457709.

The product of its digits is 1843200, while the sum is 46.

Adding to 21214414554634 its reverse (43645541441212), we get a palindrome (64859955995846).

The spelling of 21214414554634 in words is "twenty-one trillion, two hundred fourteen billion, four hundred fourteen million, five hundred fifty-four thousand, six hundred thirty-four".