21823232496 has 320 divisors, whose sum is σ = 65842452480. Its totient is φ = 6172277760.

The previous prime is 21823232479. The next prime is 21823232527. The reversal of 21823232496 is 69423232812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 65931051 + ... + 65931381.

It is an arithmetic number, because the mean of its divisors is an integer number (205757664).

Almost surely, 2^21823232496 is an apocalyptic number.

21823232496 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21823232496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32921226240).

21823232496 is an abundant number, since it is smaller than the sum of its proper divisors (44019219984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21823232496 is a wasteful number, since it uses less digits than its factorization.

21823232496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524 (or 518 counting only the distinct ones).

The product of its digits is 248832, while the sum is 42.

The spelling of 21823232496 in words is "twenty-one billion, eight hundred twenty-three million, two hundred thirty-two thousand, four hundred ninety-six".