23505645087 has 48 divisors (see below), whose sum is σ = 36457724160. Its totient is φ = 14557745664.

The previous prime is 23505645071. The next prime is 23505645103. The reversal of 23505645087 is 78054650532.

23505645087 is a `hidden beast` number, since 2 + 3 + 5 + 0 + 564 + 5 + 0 + 87 = 666.

It is an interprime number because it is at equal distance from previous prime (23505645071) and next prime (23505645103).

It is not a de Polignac number, because 23505645087 - 2⁴ = 23505645071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23505645067) 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, 1585903 + ... + 1600655.

It is an arithmetic number, because the mean of its divisors is an integer number (759535920).

Almost surely, 2^23505645087 is an apocalyptic number.

23505645087 is a deficient number, since it is larger than the sum of its proper divisors (12952079073).

23505645087 is a wasteful number, since it uses less digits than its factorization.

23505645087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15004 (or 15001 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 45.

The spelling of 23505645087 in words is "twenty-three billion, five hundred five million, six hundred forty-five thousand, eighty-seven".