24991984380 has 192 divisors, whose sum is σ = 77770699776. Its totient is φ = 5945856000.

The previous prime is 24991984373. The next prime is 24991984397. The reversal of 24991984380 is 8348919942.

It is a self number, because there is not a number n which added to its sum of digits gives 24991984380.

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, 11292154 + ... + 11294366.

It is an arithmetic number, because the mean of its divisors is an integer number (405055728).

Almost surely, 2^24991984380 is an apocalyptic number.

24991984380 is a gapful number since it is divisible by the number (20) 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 24991984380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38885349888).

24991984380 is an abundant number, since it is smaller than the sum of its proper divisors (52778715396).

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

24991984380 is a wasteful number, since it uses less digits than its factorization.

24991984380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2548 (or 2546 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 57.

The spelling of 24991984380 in words is "twenty-four billion, nine hundred ninety-one million, nine hundred eighty-four thousand, three hundred eighty".