155111327051029 has 2 divisors, whose sum is σ = 155111327051030. Its totient is φ = 155111327051028.

The previous prime is 155111327051003. The next prime is 155111327051033. The reversal of 155111327051029 is 920150723111551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 152033881360804 + 3077445690225 = 12330202^2 + 1754265^2 .

It is a cyclic number.

It is not a de Polignac number, because 155111327051029 - 2¹¹ = 155111327048981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155111327051069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77555663525514 + 77555663525515.

It is an arithmetic number, because the mean of its divisors is an integer number (77555663525515).

Almost surely, 2^{155111327051029} is an apocalyptic number.

It is an amenable number.

155111327051029 is a deficient number, since it is larger than the sum of its proper divisors (1).

155111327051029 is an equidigital number, since it uses as much as digits as its factorization.

155111327051029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 94500, while the sum is 43.

The spelling of 155111327051029 in words is "one hundred fifty-five trillion, one hundred eleven billion, three hundred twenty-seven million, fifty-one thousand, twenty-nine".