21696315514 has 16 divisors (see below), whose sum is σ = 32933557800. Its totient is φ = 10718636544.

The previous prime is 21696315497. The next prime is 21696315547. The reversal of 21696315514 is 41551369612.

It can be written as a sum of positive squares in 4 ways, for example, as 2840357025 + 18855958489 = 53295^2 + 137317^2 .

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, 211714 + ... + 297010.

Almost surely, 2^21696315514 is an apocalyptic number.

21696315514 is a deficient number, since it is larger than the sum of its proper divisors (11237242286).

21696315514 is a wasteful number, since it uses less digits than its factorization.

21696315514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86817.

The product of its digits is 194400, while the sum is 43.

The spelling of 21696315514 in words is "twenty-one billion, six hundred ninety-six million, three hundred fifteen thousand, five hundred fourteen".