56261400066449 has 2 divisors, whose sum is σ = 56261400066450. Its totient is φ = 56261400066448.

The previous prime is 56261400066397. The next prime is 56261400066467. The reversal of 56261400066449 is 94466000416265.

56261400066449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55274288270224 + 987111796225 = 7434668^2 + 993535^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56261400066449 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56261400066449.

It is not a weakly prime, because it can be changed into another prime (56261400066649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28130700033224 + 28130700033225.

It is an arithmetic number, because the mean of its divisors is an integer number (28130700033225).

Almost surely, 2^{56261400066449} is an apocalyptic number.

It is an amenable number.

56261400066449 is a deficient number, since it is larger than the sum of its proper divisors (1).

56261400066449 is an equidigital number, since it uses as much as digits as its factorization.

56261400066449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7464960, while the sum is 53.

The spelling of 56261400066449 in words is "fifty-six trillion, two hundred sixty-one billion, four hundred million, sixty-six thousand, four hundred forty-nine".