12553577423789 has 2 divisors, whose sum is σ = 12553577423790. Its totient is φ = 12553577423788.

The previous prime is 12553577423743. The next prime is 12553577423791. The reversal of 12553577423789 is 98732477535521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11814550072900 + 739027350889 = 3437230^2 + 859667^2 .

It is a cyclic number.

It is not a de Polignac number, because 12553577423789 - 2³² = 12549282456493 is a prime.

It is a super-2 number, since 2×12553577423789² (a number of 27 digits) contains 22 as substring.

Together with 12553577423791, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12553577423089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6276788711894 + 6276788711895.

It is an arithmetic number, because the mean of its divisors is an integer number (6276788711895).

Almost surely, 2^{12553577423789} is an apocalyptic number.

It is an amenable number.

12553577423789 is a deficient number, since it is larger than the sum of its proper divisors (1).

12553577423789 is an equidigital number, since it uses as much as digits as its factorization.

12553577423789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 444528000, while the sum is 68.

The spelling of 12553577423789 in words is "twelve trillion, five hundred fifty-three billion, five hundred seventy-seven million, four hundred twenty-three thousand, seven hundred eighty-nine".