91384940995 has 32 divisors (see below), whose sum is σ = 114524928000. Its totient is φ = 69958412160.

The previous prime is 91384940989. The next prime is 91384941029. The reversal of 91384940995 is 59904948319.

It is not a de Polignac number, because 91384940995 - 2¹³ = 91384932803 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1627041 + ... + 1682269.

It is an arithmetic number, because the mean of its divisors is an integer number (3578904000).

Almost surely, 2^91384940995 is an apocalyptic number.

91384940995 is a deficient number, since it is larger than the sum of its proper divisors (23139987005).

91384940995 is a wasteful number, since it uses less digits than its factorization.

91384940995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55443.

The product of its (nonzero) digits is 12597120, while the sum is 61.

The spelling of 91384940995 in words is "ninety-one billion, three hundred eighty-four million, nine hundred forty thousand, nine hundred ninety-five".