23978385065880 has 768 divisors, whose sum is σ = 93454137504000. Its totient is φ = 5218194161664.

The previous prime is 23978385065821. The next prime is 23978385065881. The reversal of 23978385065880 is 8856058387932.

23978385065880 is a `hidden beast` number, since 2 + 3 + 9 + 7 + 8 + 38 + 5 + 0 + 6 + 588 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 23978385065799 and 23978385065808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23978385065881) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 804926026 + ... + 804955814.

It is an arithmetic number, because the mean of its divisors is an integer number (121685074875).

Almost surely, 2^{23978385065880} is an apocalyptic number.

23978385065880 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 23978385065880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46727068752000).

23978385065880 is an abundant number, since it is smaller than the sum of its proper divisors (69475752438120).

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

23978385065880 is a wasteful number, since it uses less digits than its factorization.

23978385065880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30036 (or 30029 counting only the distinct ones).

The product of its (nonzero) digits is 696729600, while the sum is 72.

The spelling of 23978385065880 in words is "twenty-three trillion, nine hundred seventy-eight billion, three hundred eighty-five million, sixty-five thousand, eight hundred eighty".