20369856293 has 2 divisors, whose sum is σ = 20369856294. Its totient is φ = 20369856292.

The previous prime is 20369856289. The next prime is 20369856301. The reversal of 20369856293 is 39265896302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19919652769 + 450203524 = 141137^2 + 21218^2 .

It is a cyclic number.

It is not a de Polignac number, because 20369856293 - 2² = 20369856289 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20369856593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10184928146 + 10184928147.

It is an arithmetic number, because the mean of its divisors is an integer number (10184928147).

Almost surely, 2^20369856293 is an apocalyptic number.

It is an amenable number.

20369856293 is a deficient number, since it is larger than the sum of its proper divisors (1).

20369856293 is an equidigital number, since it uses as much as digits as its factorization.

20369856293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4199040, while the sum is 53.

The spelling of 20369856293 in words is "twenty billion, three hundred sixty-nine million, eight hundred fifty-six thousand, two hundred ninety-three".