23505722487 has 24 divisors (see below), whose sum is σ = 37414801424. Its totient is φ = 14128660224.

The previous prime is 23505722477. The next prime is 23505722507. The reversal of 23505722487 is 78422750532.

23505722487 is a `hidden beast` number, since 2 + 3 + 50 + 572 + 24 + 8 + 7 = 666.

It is not a de Polignac number, because 23505722487 - 2²⁷ = 23371504759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23505722447) 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, 2331058 + ... + 2341119.

Almost surely, 2^23505722487 is an apocalyptic number.

23505722487 is a deficient number, since it is larger than the sum of its proper divisors (13909078937).

23505722487 is a wasteful number, since it uses less digits than its factorization.

23505722487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4672239 (or 4672236 counting only the distinct ones).

The product of its (nonzero) digits is 940800, while the sum is 45.

The spelling of 23505722487 in words is "twenty-three billion, five hundred five million, seven hundred twenty-two thousand, four hundred eighty-seven".