24998883021 has 48 divisors (see below), whose sum is σ = 42774600960. Its totient is φ = 13765489920.

The previous prime is 24998883001. The next prime is 24998883023. The reversal of 24998883021 is 12038889942.

24998883021 is a `hidden beast` number, since 249 + 98 + 8 + 8 + 302 + 1 = 666.

It is not a de Polignac number, because 24998883021 - 2²² = 24994688717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24998883023) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 938736 + ... + 964998.

It is an arithmetic number, because the mean of its divisors is an integer number (891137520).

Almost surely, 2^24998883021 is an apocalyptic number.

24998883021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

24998883021 is a deficient number, since it is larger than the sum of its proper divisors (17775717939).

24998883021 is a wasteful number, since it uses less digits than its factorization.

24998883021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26826 (or 26823 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 54.

The spelling of 24998883021 in words is "twenty-four billion, nine hundred ninety-eight million, eight hundred eighty-three thousand, twenty-one".