18687707747275 has 24 divisors (see below), whose sum is σ = 26483335307264. Its totient is φ = 12814339255200.

The previous prime is 18687707747237. The next prime is 18687707747309. The reversal of 18687707747275 is 57274770778681.

It is a de Polignac number, because none of the positive numbers 2^k-18687707747275 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34015414 + ... + 34560436.

Almost surely, 2^{18687707747275} is an apocalyptic number.

18687707747275 is a deficient number, since it is larger than the sum of its proper divisors (7795627559989).

18687707747275 is a wasteful number, since it uses less digits than its factorization.

18687707747275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740971 (or 740966 counting only the distinct ones).

The product of its (nonzero) digits is 1807088640, while the sum is 76.

The spelling of 18687707747275 in words is "eighteen trillion, six hundred eighty-seven billion, seven hundred seven million, seven hundred forty-seven thousand, two hundred seventy-five".