23878518321 has 8 divisors (see below), whose sum is σ = 36386313664. Its totient is φ = 13644867600.

The previous prime is 23878518319. The next prime is 23878518329. The reversal of 23878518321 is 12381587832.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23878518321 - 2¹ = 23878518319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23878518329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 568536130 + ... + 568536171.

It is an arithmetic number, because the mean of its divisors is an integer number (4548289208).

Almost surely, 2^23878518321 is an apocalyptic number.

23878518321 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23878518321 is a deficient number, since it is larger than the sum of its proper divisors (12507795343).

23878518321 is a wasteful number, since it uses less digits than its factorization.

23878518321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137072311.

The product of its digits is 645120, while the sum is 48.

The spelling of 23878518321 in words is "twenty-three billion, eight hundred seventy-eight million, five hundred eighteen thousand, three hundred twenty-one".