55743756569 has 2 divisors, whose sum is σ = 55743756570. Its totient is φ = 55743756568.

The previous prime is 55743756511. The next prime is 55743756577. The reversal of 55743756569 is 96565734755.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44552655625 + 11191100944 = 211075^2 + 105788^2 .

It is a cyclic number.

It is not a de Polignac number, because 55743756569 - 2²⁸ = 55475321113 is a prime.

It is a super-2 number, since 2×55743756569² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55743756769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27871878284 + 27871878285.

It is an arithmetic number, because the mean of its divisors is an integer number (27871878285).

Almost surely, 2^55743756569 is an apocalyptic number.

It is an amenable number.

55743756569 is a deficient number, since it is larger than the sum of its proper divisors (1).

55743756569 is an equidigital number, since it uses as much as digits as its factorization.

55743756569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 119070000, while the sum is 62.

The spelling of 55743756569 in words is "fifty-five billion, seven hundred forty-three million, seven hundred fifty-six thousand, five hundred sixty-nine".