21833905155 has 8 divisors (see below), whose sum is σ = 34934248272. Its totient is φ = 11644749408.

The previous prime is 21833905097. The next prime is 21833905169. The reversal of 21833905155 is 55150933812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21833905155 - 2¹¹ = 21833903107 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 727796824 + ... + 727796853.

It is an arithmetic number, because the mean of its divisors is an integer number (4366781034).

Almost surely, 2^21833905155 is an apocalyptic number.

21833905155 is a deficient number, since it is larger than the sum of its proper divisors (13100343117).

21833905155 is a wasteful number, since it uses less digits than its factorization.

21833905155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455593685.

The product of its (nonzero) digits is 162000, while the sum is 42.

The spelling of 21833905155 in words is "twenty-one billion, eight hundred thirty-three million, nine hundred five thousand, one hundred fifty-five".