23978365047 has 48 divisors (see below), whose sum is σ = 44871823360. Its totient is φ = 11982240576.

The previous prime is 23978365043. The next prime is 23978365051. The reversal of 23978365047 is 74056387932.

23978365047 is a `hidden beast` number, since 2 + 39 + 78 + 36 + 504 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (23978365043) and next prime (23978365051).

It is not a de Polignac number, because 23978365047 - 2² = 23978365043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23978364984 and 23978365002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23978365043) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 754903 + ... + 786024.

Almost surely, 2^23978365047 is an apocalyptic number.

23978365047 is a deficient number, since it is larger than the sum of its proper divisors (20893458313).

23978365047 is a wasteful number, since it uses less digits than its factorization.

23978365047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540972 (or 1540969 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 54.

The spelling of 23978365047 in words is "twenty-three billion, nine hundred seventy-eight million, three hundred sixty-five thousand, forty-seven".