91513555163 has 8 divisors (see below), whose sum is σ = 91582161888. Its totient is φ = 91444978944.

The previous prime is 91513555153. The next prime is 91513555169. The reversal of 91513555163 is 36155531519.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91513555163 - 2²⁴ = 91496777947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91513555169) 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 7 ways as a sum of consecutive naturals, for example, 10951595 + ... + 10959947.

It is an arithmetic number, because the mean of its divisors is an integer number (11447770236).

Almost surely, 2^91513555163 is an apocalyptic number.

91513555163 is a deficient number, since it is larger than the sum of its proper divisors (68606725).

91513555163 is a wasteful number, since it uses less digits than its factorization.

91513555163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15253.

The product of its digits is 303750, while the sum is 44.

The spelling of 91513555163 in words is "ninety-one billion, five hundred thirteen million, five hundred fifty-five thousand, one hundred sixty-three".