2551763442269 has 2 divisors, whose sum is σ = 2551763442270. Its totient is φ = 2551763442268.

The previous prime is 2551763442253. The next prime is 2551763442323. The reversal of 2551763442269 is 9622443671552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1518348877369 + 1033414564900 = 1232213^2 + 1016570^2 .

It is a cyclic number.

It is not a de Polignac number, because 2551763442269 - 2⁴ = 2551763442253 is a prime.

It is a super-2 number, since 2×2551763442269² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2551763442229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1275881721134 + 1275881721135.

It is an arithmetic number, because the mean of its divisors is an integer number (1275881721135).

Almost surely, 2^{2551763442269} is an apocalyptic number.

It is an amenable number.

2551763442269 is a deficient number, since it is larger than the sum of its proper divisors (1).

2551763442269 is an equidigital number, since it uses as much as digits as its factorization.

2551763442269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21772800, while the sum is 56.

The spelling of 2551763442269 in words is "two trillion, five hundred fifty-one billion, seven hundred sixty-three million, four hundred forty-two thousand, two hundred sixty-nine".