21393116295 has 16 divisors (see below), whose sum is σ = 34240578432. Its totient is φ = 11405797920.

The previous prime is 21393116279. The next prime is 21393116299. The reversal of 21393116295 is 59261139312.

It is not a de Polignac number, because 21393116295 - 2⁴ = 21393116279 is a prime.

It is a super-2 number, since 2×21393116295² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21393116299) 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, 195457 + ... + 284586.

It is an arithmetic number, because the mean of its divisors is an integer number (2140036152).

Almost surely, 2^21393116295 is an apocalyptic number.

21393116295 is a deficient number, since it is larger than the sum of its proper divisors (12847462137).

21393116295 is a wasteful number, since it uses less digits than its factorization.

21393116295 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483022.

The product of its digits is 87480, while the sum is 42.

The spelling of 21393116295 in words is "twenty-one billion, three hundred ninety-three million, one hundred sixteen thousand, two hundred ninety-five".