155234238806429 has 2 divisors, whose sum is σ = 155234238806430. Its totient is φ = 155234238806428.

The previous prime is 155234238806281. The next prime is 155234238806453. The reversal of 155234238806429 is 924608832432551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136593518906329 + 18640719900100 = 11687323^2 + 4317490^2 .

It is a cyclic number.

It is not a de Polignac number, because 155234238806429 - 2³² = 155229943839133 is a prime.

It is a super-2 number, since 2×155234238806429² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155234238856429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77617119403214 + 77617119403215.

It is an arithmetic number, because the mean of its divisors is an integer number (77617119403215).

Almost surely, 2^{155234238806429} is an apocalyptic number.

It is an amenable number.

155234238806429 is a deficient number, since it is larger than the sum of its proper divisors (1).

155234238806429 is an equidigital number, since it uses as much as digits as its factorization.

155234238806429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 99532800, while the sum is 62.

The spelling of 155234238806429 in words is "one hundred fifty-five trillion, two hundred thirty-four billion, two hundred thirty-eight million, eight hundred six thousand, four hundred twenty-nine".