23768987887 has 4 divisors (see below), whose sum is σ = 23769311296. Its totient is φ = 23768664480.

The previous prime is 23768987873. The next prime is 23768987951. The reversal of 23768987887 is 78878986732.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 23768987887 - 2³¹ = 21621504239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23768987807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7687 + ... + 218167.

It is an arithmetic number, because the mean of its divisors is an integer number (5942327824).

Almost surely, 2^23768987887 is an apocalyptic number.

23768987887 is a deficient number, since it is larger than the sum of its proper divisors (323409).

23768987887 is a wasteful number, since it uses less digits than its factorization.

23768987887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323408.

The product of its digits is 455196672, while the sum is 73.

The spelling of 23768987887 in words is "twenty-three billion, seven hundred sixty-eight million, nine hundred eighty-seven thousand, eight hundred eighty-seven".