188668883685 has 16 divisors (see below), whose sum is σ = 302186994624. Its totient is φ = 100517811072.

The previous prime is 188668883681. The next prime is 188668883687. The reversal of 188668883685 is 586388866881.

It is not a de Polignac number, because 188668883685 - 2² = 188668883681 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188668883681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6584827 + ... + 6613416.

It is an arithmetic number, because the mean of its divisors is an integer number (18886687164).

Almost surely, 2^188668883685 is an apocalyptic number.

188668883685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

188668883685 is a deficient number, since it is larger than the sum of its proper divisors (113518110939).

188668883685 is a wasteful number, since it uses less digits than its factorization.

188668883685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13199204.

The product of its digits is 849346560, while the sum is 75.

The spelling of 188668883685 in words is "one hundred eighty-eight billion, six hundred sixty-eight million, eight hundred eighty-three thousand, six hundred eighty-five".