91769112993 has 16 divisors (see below), whose sum is σ = 125302763520. Its totient is φ = 59714530896.

The previous prime is 91769112971. The next prime is 91769113019. The reversal of 91769112993 is 39921196719.

It is not a de Polignac number, because 91769112993 - 2¹² = 91769108897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91769112943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 834963 + ... + 938456.

It is an arithmetic number, because the mean of its divisors is an integer number (7831422720).

Almost surely, 2^91769112993 is an apocalyptic number.

It is an amenable number.

91769112993 is a deficient number, since it is larger than the sum of its proper divisors (33533650527).

91769112993 is a wasteful number, since it uses less digits than its factorization.

91769112993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1773836.

The product of its digits is 1653372, while the sum is 57.

The spelling of 91769112993 in words is "ninety-one billion, seven hundred sixty-nine million, one hundred twelve thousand, nine hundred ninety-three".