2115115456429 has 2 divisors, whose sum is σ = 2115115456430. Its totient is φ = 2115115456428.

The previous prime is 2115115456387. The next prime is 2115115456439. The reversal of 2115115456429 is 9246545115112.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1471393260100 + 643722196329 = 1213010^2 + 802323^2 .

It is a cyclic number.

It is not a de Polignac number, because 2115115456429 - 2³⁷ = 1977676502957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2115115456439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1057557728214 + 1057557728215.

It is an arithmetic number, because the mean of its divisors is an integer number (1057557728215).

Almost surely, 2^{2115115456429} is an apocalyptic number.

It is an amenable number.

2115115456429 is a deficient number, since it is larger than the sum of its proper divisors (1).

2115115456429 is an equidigital number, since it uses as much as digits as its factorization.

2115115456429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432000, while the sum is 46.

The spelling of 2115115456429 in words is "two trillion, one hundred fifteen billion, one hundred fifteen million, four hundred fifty-six thousand, four hundred twenty-nine".