23145785878 has 8 divisors (see below), whose sum is σ = 34724972520. Its totient is φ = 11570795040.

The previous prime is 23145785797. The next prime is 23145785911. The reversal of 23145785878 is 87858754132.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1035123 + ... + 1057246.

It is an arithmetic number, because the mean of its divisors is an integer number (4340621565).

Almost surely, 2^23145785878 is an apocalyptic number.

23145785878 is a deficient number, since it is larger than the sum of its proper divisors (11579186642).

23145785878 is a wasteful number, since it uses less digits than its factorization.

23145785878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2097902.

The product of its digits is 15052800, while the sum is 58.

The spelling of 23145785878 in words is "twenty-three billion, one hundred forty-five million, seven hundred eighty-five thousand, eight hundred seventy-eight".