20407276813809 has 8 divisors (see below), whose sum is σ = 27310107225472. Its totient is φ = 13554648805680.

The previous prime is 20407276813801. The next prime is 20407276813831. The reversal of 20407276813809 is 90831867270402.

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

It is not a de Polignac number, because 20407276813809 - 2³ = 20407276813801 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20407276813801) 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, 12550599934 + ... + 12550601559.

It is an arithmetic number, because the mean of its divisors is an integer number (3413763403184).

Almost surely, 2^{20407276813809} is an apocalyptic number.

It is an amenable number.

20407276813809 is a deficient number, since it is larger than the sum of its proper divisors (6902830411663).

20407276813809 is a wasteful number, since it uses less digits than its factorization.

20407276813809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25101201767.

The product of its (nonzero) digits is 8128512, while the sum is 57.

The spelling of 20407276813809 in words is "twenty trillion, four hundred seven billion, two hundred seventy-six million, eight hundred thirteen thousand, eight hundred nine".