23773143918 has 16 divisors (see below), whose sum is σ = 47547830016. Its totient is φ = 7924124280.

The previous prime is 23773143899. The next prime is 23773143983. The reversal of 23773143918 is 81934137732.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269473 + ... + 346643.

It is an arithmetic number, because the mean of its divisors is an integer number (2971739376).

Almost surely, 2^23773143918 is an apocalyptic number.

23773143918 is an abundant number, since it is smaller than the sum of its proper divisors (23774686098).

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

23773143918 is a wasteful number, since it uses less digits than its factorization.

23773143918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128519.

The product of its digits is 762048, while the sum is 48.

The spelling of 23773143918 in words is "twenty-three billion, seven hundred seventy-three million, one hundred forty-three thousand, nine hundred eighteen".