20636051365 has 8 divisors (see below), whose sum is σ = 24764916600. Its totient is φ = 16507737792.

The previous prime is 20636051347. The next prime is 20636051369. The reversal of 20636051365 is 56315063602.

It can be written as a sum of positive squares in 4 ways, for example, as 11471052609 + 9164998756 = 107103^2 + 95734^2 .

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 20636051365 - 2¹⁷ = 20635920293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20636051369) 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, 50590 + ... + 209359.

It is an arithmetic number, because the mean of its divisors is an integer number (3095614575).

Almost surely, 2^20636051365 is an apocalyptic number.

It is an amenable number.

20636051365 is a deficient number, since it is larger than the sum of its proper divisors (4128865235).

20636051365 is a wasteful number, since it uses less digits than its factorization.

20636051365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275831.

The product of its (nonzero) digits is 97200, while the sum is 37.

The spelling of 20636051365 in words is "twenty billion, six hundred thirty-six million, fifty-one thousand, three hundred sixty-five".