21831722883 has 12 divisors (see below), whose sum is σ = 32702663448. Its totient is φ = 14554481760.

The previous prime is 21831722879. The next prime is 21831722911. The reversal of 21831722883 is 38822713812.

It is not a de Polignac number, because 21831722883 - 2² = 21831722879 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21831722833) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44920998 + ... + 44921483.

It is an arithmetic number, because the mean of its divisors is an integer number (2725221954).

Almost surely, 2^21831722883 is an apocalyptic number.

21831722883 is a deficient number, since it is larger than the sum of its proper divisors (10870940565).

21831722883 is an frugal number, since it uses more digits than its factorization.

21831722883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89842496 (or 89842484 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The spelling of 21831722883 in words is "twenty-one billion, eight hundred thirty-one million, seven hundred twenty-two thousand, eight hundred eighty-three".