18795768120049 has 2 divisors, whose sum is σ = 18795768120050. Its totient is φ = 18795768120048.

The previous prime is 18795768119983. The next prime is 18795768120089. The reversal of 18795768120049 is 94002186759781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12528095645025 + 6267672475024 = 3539505^2 + 2503532^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18795768120049 is a prime.

It is not a weakly prime, because it can be changed into another prime (18795768120089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9397884060024 + 9397884060025.

It is an arithmetic number, because the mean of its divisors is an integer number (9397884060025).

Almost surely, 2^{18795768120049} is an apocalyptic number.

It is an amenable number.

18795768120049 is a deficient number, since it is larger than the sum of its proper divisors (1).

18795768120049 is an equidigital number, since it uses as much as digits as its factorization.

18795768120049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60963840, while the sum is 67.

The spelling of 18795768120049 in words is "eighteen trillion, seven hundred ninety-five billion, seven hundred sixty-eight million, one hundred twenty thousand, forty-nine".