23977816927 has 4 divisors (see below), whose sum is σ = 24001348680. Its totient is φ = 23954285176.

The previous prime is 23977816921. The next prime is 23977816937. The reversal of 23977816927 is 72961877932.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23977816927 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 (23977816921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11764348 + ... + 11766385.

It is an arithmetic number, because the mean of its divisors is an integer number (6000337170).

Almost surely, 2^23977816927 is an apocalyptic number.

23977816927 is a deficient number, since it is larger than the sum of its proper divisors (23531753).

23977816927 is a wasteful number, since it uses less digits than its factorization.

23977816927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23531752.

The product of its digits is 16003008, while the sum is 61.

The spelling of 23977816927 in words is "twenty-three billion, nine hundred seventy-seven million, eight hundred sixteen thousand, nine hundred twenty-seven".