21692995955 has 8 divisors (see below), whose sum is σ = 26032743792. Its totient is φ = 17353631008.

The previous prime is 21692995939. The next prime is 21692995957. The reversal of 21692995955 is 55959929612.

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

It is a cyclic number.

It is not a de Polignac number, because 21692995955 - 2⁴ = 21692995939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21692995957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48749 + ... + 213921.

It is an arithmetic number, because the mean of its divisors is an integer number (3254092974).

Almost surely, 2^21692995955 is an apocalyptic number.

21692995955 is a deficient number, since it is larger than the sum of its proper divisors (4339747837).

21692995955 is a wasteful number, since it uses less digits than its factorization.

21692995955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191445.

The product of its digits is 19683000, while the sum is 62.

The spelling of 21692995955 in words is "twenty-one billion, six hundred ninety-two million, nine hundred ninety-five thousand, nine hundred fifty-five".