91339614993 has 16 divisors (see below), whose sum is σ = 140672776896. Its totient is φ = 52101027840.

The previous prime is 91339614979. The next prime is 91339615033. The reversal of 91339614993 is 39941693319.

It is not a de Polignac number, because 91339614993 - 2⁶ = 91339614929 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (91339614973) 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, 81407296 + ... + 81408417.

It is an arithmetic number, because the mean of its divisors is an integer number (8792048556).

Almost surely, 2^91339614993 is an apocalyptic number.

It is an amenable number.

91339614993 is a deficient number, since it is larger than the sum of its proper divisors (49333161903).

91339614993 is a wasteful number, since it uses less digits than its factorization.

91339614993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162815744.

The product of its digits is 4251528, while the sum is 57.

The spelling of 91339614993 in words is "ninety-one billion, three hundred thirty-nine million, six hundred fourteen thousand, nine hundred ninety-three".