91071439129 has 16 divisors (see below), whose sum is σ = 102570508800. Its totient is φ = 80109792000.

The previous prime is 91071439111. The next prime is 91071439157. The reversal of 91071439129 is 92193417019.

It is a cyclic number.

It is not a de Polignac number, because 91071439129 - 2⁹ = 91071438617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91071437129) 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 in 15 ways as a sum of consecutive naturals, for example, 3002419 + ... + 3032599.

It is an arithmetic number, because the mean of its divisors is an integer number (6410656800).

Almost surely, 2^91071439129 is an apocalyptic number.

It is an amenable number.

91071439129 is a deficient number, since it is larger than the sum of its proper divisors (11499069671).

91071439129 is a wasteful number, since it uses less digits than its factorization.

91071439129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39072.

The product of its (nonzero) digits is 122472, while the sum is 46.

The spelling of 91071439129 in words is "ninety-one billion, seventy-one million, four hundred thirty-nine thousand, one hundred twenty-nine".