21632162563315 has 4 divisors (see below), whose sum is σ = 25958595075984. Its totient is φ = 17305730050648.

The previous prime is 21632162563301. The next prime is 21632162563351. The reversal of 21632162563315 is 51336526123612.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21632162563315 - 2²³ = 21632154174707 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2163216256327 + ... + 2163216256336.

It is an arithmetic number, because the mean of its divisors is an integer number (6489648768996).

Almost surely, 2^{21632162563315} is an apocalyptic number.

21632162563315 is a deficient number, since it is larger than the sum of its proper divisors (4326432512669).

21632162563315 is an equidigital number, since it uses as much as digits as its factorization.

21632162563315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4326432512668.

The product of its digits is 1166400, while the sum is 46.

Adding to 21632162563315 its reverse (51336526123612), we get a palindrome (72968688686927).

The spelling of 21632162563315 in words is "twenty-one trillion, six hundred thirty-two billion, one hundred sixty-two million, five hundred sixty-three thousand, three hundred fifteen".