21923248051 has 8 divisors (see below), whose sum is σ = 22360486400. Its totient is φ = 21490003080.

The previous prime is 21923248043. The next prime is 21923248073. The reversal of 21923248051 is 15084232912.

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 21923248051 - 2³ = 21923248043 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21923248051.

It is not an unprimeable number, because it can be changed into a prime (21923248751) 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, 987255 + ... + 1009216.

It is an arithmetic number, because the mean of its divisors is an integer number (2795060800).

Almost surely, 2^21923248051 is an apocalyptic number.

21923248051 is a deficient number, since it is larger than the sum of its proper divisors (437238349).

21923248051 is a wasteful number, since it uses less digits than its factorization.

21923248051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1996689.

The product of its (nonzero) digits is 34560, while the sum is 37.

The spelling of 21923248051 in words is "twenty-one billion, nine hundred twenty-three million, two hundred forty-eight thousand, fifty-one".