23971637385 has 24 divisors (see below), whose sum is σ = 42334820424. Its totient is φ = 12543648000.

The previous prime is 23971637383. The next prime is 23971637387. The reversal of 23971637385 is 58373617932.

It is an interprime number because it is at equal distance from previous prime (23971637383) and next prime (23971637387).

It can be written as a sum of positive squares in 4 ways, for example, as 1802511936 + 22169125449 = 42456^2 + 148893^2 .

It is not a de Polignac number, because 23971637385 - 2¹ = 23971637383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23971637383) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5023116 + ... + 5027885.

It is an arithmetic number, because the mean of its divisors is an integer number (1763950851).

Almost surely, 2^23971637385 is an apocalyptic number.

It is an amenable number.

23971637385 is a deficient number, since it is larger than the sum of its proper divisors (18363183039).

23971637385 is a wasteful number, since it uses less digits than its factorization.

23971637385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10051065 (or 10051062 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 54.

The spelling of 23971637385 in words is "twenty-three billion, nine hundred seventy-one million, six hundred thirty-seven thousand, three hundred eighty-five".