20776027417 has 4 divisors (see below), whose sum is σ = 20784755556. Its totient is φ = 20767299280.

The previous prime is 20776027379. The next prime is 20776027453. The reversal of 20776027417 is 71472067702.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 289544256 + 20486483161 = 17016^2 + 143131^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20776027417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20776027487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4360498 + ... + 4365259.

It is an arithmetic number, because the mean of its divisors is an integer number (5196188889).

Almost surely, 2^20776027417 is an apocalyptic number.

It is an amenable number.

20776027417 is a deficient number, since it is larger than the sum of its proper divisors (8728139).

20776027417 is an equidigital number, since it uses as much as digits as its factorization.

20776027417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8728138.

The product of its (nonzero) digits is 230496, while the sum is 43.

The spelling of 20776027417 in words is "twenty billion, seven hundred seventy-six million, twenty-seven thousand, four hundred seventeen".