18688361706 has 48 divisors (see below), whose sum is σ = 46292535744. Its totient is φ = 5337617472.

The previous prime is 18688361701. The next prime is 18688361717. The reversal of 18688361706 is 60716388681.

18688361706 is a `hidden beast` number, since 18 + 6 + 8 + 8 + 3 + 617 + 0 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (18688361701) 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, 346965 + ... + 397191.

It is an arithmetic number, because the mean of its divisors is an integer number (964427828).

Almost surely, 2^18688361706 is an apocalyptic number.

18688361706 is an abundant number, since it is smaller than the sum of its proper divisors (27604174038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18688361706 is a wasteful number, since it uses less digits than its factorization.

18688361706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53195 (or 53192 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The spelling of 18688361706 in words is "eighteen billion, six hundred eighty-eight million, three hundred sixty-one thousand, seven hundred six".