20368609185 has 8 divisors (see below), whose sum is σ = 32589774720. Its totient is φ = 10863258224.

The previous prime is 20368609181. The next prime is 20368609189. The reversal of 20368609185 is 58190686302.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20368609181) and next prime (20368609189).

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

It is a cyclic number.

It is not a de Polignac number, because 20368609185 - 2² = 20368609181 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20368609181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 678953625 + ... + 678953654.

It is an arithmetic number, because the mean of its divisors is an integer number (4073721840).

Almost surely, 2^20368609185 is an apocalyptic number.

It is an amenable number.

20368609185 is a deficient number, since it is larger than the sum of its proper divisors (12221165535).

20368609185 is a wasteful number, since it uses less digits than its factorization.

20368609185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1357907287.

The product of its (nonzero) digits is 622080, while the sum is 48.

The spelling of 20368609185 in words is "twenty billion, three hundred sixty-eight million, six hundred nine thousand, one hundred eighty-five".