20774893659 has 8 divisors (see below), whose sum is σ = 29830616592. Its totient is φ = 12784549920.

The previous prime is 20774893651. The next prime is 20774893663. The reversal of 20774893659 is 95639847702.

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

It is not a de Polignac number, because 20774893659 - 2³ = 20774893651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20774893651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266344752 + ... + 266344829.

It is an arithmetic number, because the mean of its divisors is an integer number (3728827074).

Almost surely, 2^20774893659 is an apocalyptic number.

20774893659 is a deficient number, since it is larger than the sum of its proper divisors (9055722933).

20774893659 is a wasteful number, since it uses less digits than its factorization.

20774893659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532689597.

The product of its (nonzero) digits is 22861440, while the sum is 60.

The spelling of 20774893659 in words is "twenty billion, seven hundred seventy-four million, eight hundred ninety-three thousand, six hundred fifty-nine".