21633073215 has 16 divisors (see below), whose sum is σ = 37275449568. Its totient is φ = 10650128256.

The previous prime is 21633073199. The next prime is 21633073243. The reversal of 21633073215 is 51237033612.

It is not a de Polignac number, because 21633073215 - 2⁴ = 21633073199 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55469224 + ... + 55469613.

It is an arithmetic number, because the mean of its divisors is an integer number (2329715598).

Almost surely, 2^21633073215 is an apocalyptic number.

21633073215 is a deficient number, since it is larger than the sum of its proper divisors (15642376353).

21633073215 is a wasteful number, since it uses less digits than its factorization.

21633073215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110938858.

The product of its (nonzero) digits is 22680, while the sum is 33.

The spelling of 21633073215 in words is "twenty-one billion, six hundred thirty-three million, seventy-three thousand, two hundred fifteen".