21344162255 has 32 divisors (see below), whose sum is σ = 28646049600. Its totient is φ = 15158771712.

The previous prime is 21344162233. The next prime is 21344162267. The reversal of 21344162255 is 55226144312.

It is a cyclic number.

It is not a de Polignac number, because 21344162255 - 2⁸ = 21344161999 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 462416 + ... + 506474.

It is an arithmetic number, because the mean of its divisors is an integer number (895189050).

Almost surely, 2^21344162255 is an apocalyptic number.

21344162255 is a deficient number, since it is larger than the sum of its proper divisors (7301887345).

21344162255 is a wasteful number, since it uses less digits than its factorization.

21344162255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44363.

The product of its digits is 57600, while the sum is 35.

The spelling of 21344162255 in words is "twenty-one billion, three hundred forty-four million, one hundred sixty-two thousand, two hundred fifty-five".