21617383522 has 16 divisors (see below), whose sum is σ = 38336247360. Its totient is φ = 8945124048.

The previous prime is 21617383519. The next prime is 21617383547. The reversal of 21617383522 is 22538371612.

It is a super-2 number, since 2×21617383522² (a number of 21 digits) contains 22 as substring.

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, 26621988 + ... + 26622799.

It is an arithmetic number, because the mean of its divisors is an integer number (2396015460).

Almost surely, 2^21617383522 is an apocalyptic number.

21617383522 is a deficient number, since it is larger than the sum of its proper divisors (16718863838).

21617383522 is a wasteful number, since it uses less digits than its factorization.

21617383522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53244825.

The product of its digits is 120960, while the sum is 40.

The spelling of 21617383522 in words is "twenty-one billion, six hundred seventeen million, three hundred eighty-three thousand, five hundred twenty-two".