115172029009 has 2 divisors, whose sum is σ = 115172029010. Its totient is φ = 115172029008.

The previous prime is 115172029001. The next prime is 115172029043. The reversal of 115172029009 is 900920271511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72541342225 + 42630686784 = 269335^2 + 206472^2 .

It is a cyclic number.

It is not a de Polignac number, because 115172029009 - 2³ = 115172029001 is a prime.

It is not a weakly prime, because it can be changed into another prime (115172029001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57586014504 + 57586014505.

It is an arithmetic number, because the mean of its divisors is an integer number (57586014505).

Almost surely, 2^115172029009 is an apocalyptic number.

It is an amenable number.

115172029009 is a deficient number, since it is larger than the sum of its proper divisors (1).

115172029009 is an equidigital number, since it uses as much as digits as its factorization.

115172029009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 37.

The spelling of 115172029009 in words is "one hundred fifteen billion, one hundred seventy-two million, twenty-nine thousand, nine".