20179960685 has 8 divisors (see below), whose sum is σ = 25268820480. Its totient is φ = 15442056784.

The previous prime is 20179960651. The next prime is 20179960709. The reversal of 20179960685 is 58606997102.

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 20179960685 - 2⁶ = 20179960621 is a prime.

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, 87738845 + ... + 87739074.

It is an arithmetic number, because the mean of its divisors is an integer number (3158602560).

Almost surely, 2^20179960685 is an apocalyptic number.

It is an amenable number.

20179960685 is a deficient number, since it is larger than the sum of its proper divisors (5088859795).

20179960685 is a wasteful number, since it uses less digits than its factorization.

20179960685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175477947.

The product of its (nonzero) digits is 1632960, while the sum is 53.

The spelling of 20179960685 in words is "twenty billion, one hundred seventy-nine million, nine hundred sixty thousand, six hundred eighty-five".