13555332421079 has 2 divisors, whose sum is σ = 13555332421080. Its totient is φ = 13555332421078.

The previous prime is 13555332421027. The next prime is 13555332421091. The reversal of 13555332421079 is 97012423355531.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13555332421079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13555332421009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6777666210539 + 6777666210540.

It is an arithmetic number, because the mean of its divisors is an integer number (6777666210540).

Almost surely, 2^{13555332421079} is an apocalyptic number.

13555332421079 is a deficient number, since it is larger than the sum of its proper divisors (1).

13555332421079 is an equidigital number, since it uses as much as digits as its factorization.

13555332421079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3402000, while the sum is 50.

The spelling of 13555332421079 in words is "thirteen trillion, five hundred fifty-five billion, three hundred thirty-two million, four hundred twenty-one thousand, seventy-nine".