20950493185 has 8 divisors (see below), whose sum is σ = 25291135296. Its totient is φ = 16660032240.

The previous prime is 20950493149. The next prime is 20950493209. The reversal of 20950493185 is 58139405902.

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

It is not a de Polignac number, because 20950493185 - 2²³ = 20942104577 is a prime.

It is a Duffinian 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, 12544371 + ... + 12546040.

It is an arithmetic number, because the mean of its divisors is an integer number (3161391912).

Almost surely, 2^20950493185 is an apocalyptic number.

It is an amenable number.

20950493185 is a deficient number, since it is larger than the sum of its proper divisors (4340642111).

20950493185 is a wasteful number, since it uses less digits than its factorization.

20950493185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25090583.

The product of its (nonzero) digits is 388800, while the sum is 46.

The spelling of 20950493185 in words is "twenty billion, nine hundred fifty million, four hundred ninety-three thousand, one hundred eighty-five".