23865345504 has 576 divisors, whose sum is σ = 95940149760. Its totient is φ = 5419560960.

The previous prime is 23865345391. The next prime is 23865345541. The reversal of 23865345504 is 40554356832.

23865345504 is a `hidden beast` number, since 2 + 3 + 8 + 65 + 34 + 550 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 23865345504.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5475294 + ... + 5479650.

It is an arithmetic number, because the mean of its divisors is an integer number (166562760).

Almost surely, 2^23865345504 is an apocalyptic number.

23865345504 is a gapful number since it is divisible by the number (24) 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 23865345504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47970074880).

23865345504 is an abundant number, since it is smaller than the sum of its proper divisors (72074804256).

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

23865345504 is a wasteful number, since it uses less digits than its factorization.

23865345504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4423 (or 4412 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 45.

The spelling of 23865345504 in words is "twenty-three billion, eight hundred sixty-five million, three hundred forty-five thousand, five hundred four".