23963111978 has 12 divisors (see below), whose sum is σ = 38922333318. Its totient is φ = 11059897680.

The previous prime is 23963111969. The next prime is 23963111987. The reversal of 23963111978 is 87911136932.

It is an interprime number because it is at equal distance from previous prime (23963111969) and next prime (23963111987).

It can be written as a sum of positive squares in 3 ways, for example, as 5390055889 + 18573056089 = 73417^2 + 136283^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35448053 + ... + 35448728.

Almost surely, 2^23963111978 is an apocalyptic number.

23963111978 is a deficient number, since it is larger than the sum of its proper divisors (14959221340).

23963111978 is a wasteful number, since it uses less digits than its factorization.

23963111978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70896809 (or 70896796 counting only the distinct ones).

The product of its digits is 489888, while the sum is 50.

The spelling of 23963111978 in words is "twenty-three billion, nine hundred sixty-three million, one hundred eleven thousand, nine hundred seventy-eight".