21140616359 has 16 divisors (see below), whose sum is σ = 22829169600. Its totient is φ = 19516713216.

The previous prime is 21140616353. The next prime is 21140616383. The reversal of 21140616359 is 95361604112.

It is a cyclic number.

It is not a de Polignac number, because 21140616359 - 2²⁰ = 21139567783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21140616353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2552477 + ... + 2560745.

It is an arithmetic number, because the mean of its divisors is an integer number (1426823100).

Almost surely, 2^21140616359 is an apocalyptic number.

21140616359 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

21140616359 is a deficient number, since it is larger than the sum of its proper divisors (1688553241).

21140616359 is a wasteful number, since it uses less digits than its factorization.

21140616359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12154.

The product of its (nonzero) digits is 38880, while the sum is 38.

The spelling of 21140616359 in words is "twenty-one billion, one hundred forty million, six hundred sixteen thousand, three hundred fifty-nine".