23878177920 has 640 divisors, whose sum is σ = 89484436800. Its totient is φ = 6061547520.

The previous prime is 23878177919. The next prime is 23878177987. The reversal of 23878177920 is 2977187832.

23878177920 is a `hidden beast` number, since 2 + 387 + 8 + 177 + 92 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (640).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 113166615 + ... + 113166825.

Almost surely, 2^23878177920 is an apocalyptic number.

23878177920 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 23878177920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44742218400).

23878177920 is an abundant number, since it is smaller than the sum of its proper divisors (65606258880).

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

23878177920 is a wasteful number, since it uses less digits than its factorization.

23878177920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338 (or 317 counting only the distinct ones).

The product of its (nonzero) digits is 2370816, while the sum is 54.

The spelling of 23878177920 in words is "twenty-three billion, eight hundred seventy-eight million, one hundred seventy-seven thousand, nine hundred twenty".