55776144167789 has 2 divisors, whose sum is σ = 55776144167790. Its totient is φ = 55776144167788.

The previous prime is 55776144167743. The next prime is 55776144167801. The reversal of 55776144167789 is 98776144167755.

55776144167789 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., 31344209988100 + 24431934179689 = 5598590^2 + 4942867^2 .

It is a cyclic number.

It is not a de Polignac number, because 55776144167789 - 2²⁴ = 55776127390573 is a prime.

It is a super-2 number, since 2×55776144167789² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55776144167189) 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, 27888072083894 + 27888072083895.

It is an arithmetic number, because the mean of its divisors is an integer number (27888072083895).

Almost surely, 2^{55776144167789} is an apocalyptic number.

It is an amenable number.

55776144167789 is a deficient number, since it is larger than the sum of its proper divisors (1).

55776144167789 is an equidigital number, since it uses as much as digits as its factorization.

55776144167789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2489356800, while the sum is 77.

The spelling of 55776144167789 in words is "fifty-five trillion, seven hundred seventy-six billion, one hundred forty-four million, one hundred sixty-seven thousand, seven hundred eighty-nine".