20186683685 has 8 divisors (see below), whose sum is σ = 27684594816. Its totient is φ = 13842297360.

The previous prime is 20186683669. The next prime is 20186683691. The reversal of 20186683685 is 58638668102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20186683685 - 2⁴ = 20186683669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288381161 + ... + 288381230.

It is an arithmetic number, because the mean of its divisors is an integer number (3460574352).

Almost surely, 2^20186683685 is an apocalyptic number.

It is an amenable number.

20186683685 is a deficient number, since it is larger than the sum of its proper divisors (7497911131).

20186683685 is an equidigital number, since it uses as much as digits as its factorization.

20186683685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576762403.

The product of its (nonzero) digits is 3317760, while the sum is 53.

The spelling of 20186683685 in words is "twenty billion, one hundred eighty-six million, six hundred eighty-three thousand, six hundred eighty-five".