20320102321249 has 2 divisors, whose sum is σ = 20320102321250. Its totient is φ = 20320102321248.

The previous prime is 20320102321153. The next prime is 20320102321313. The reversal of 20320102321249 is 94212320102302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19068881104849 + 1251221216400 = 4366793^2 + 1118580^2 .

It is a cyclic number.

It is not a de Polignac number, because 20320102321249 - 2¹³ = 20320102313057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20320102321249.

It is not a weakly prime, because it can be changed into another prime (20320102321049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10160051160624 + 10160051160625.

It is an arithmetic number, because the mean of its divisors is an integer number (10160051160625).

Almost surely, 2^{20320102321249} is an apocalyptic number.

It is an amenable number.

20320102321249 is a deficient number, since it is larger than the sum of its proper divisors (1).

20320102321249 is an equidigital number, since it uses as much as digits as its factorization.

20320102321249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 20320102321249 in words is "twenty trillion, three hundred twenty billion, one hundred two million, three hundred twenty-one thousand, two hundred forty-nine".