116919891285 has 16 divisors (see below), whose sum is σ = 187124950656. Its totient is φ = 62339567168.

The previous prime is 116919891251. The next prime is 116919891289. The reversal of 116919891285 is 582198919611.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 116919891285 - 2¹¹ = 116919889237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116919891289) 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, 1052094 + ... + 1157903.

It is an arithmetic number, because the mean of its divisors is an integer number (11695309416).

Almost surely, 2^116919891285 is an apocalyptic number.

116919891285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

116919891285 is a deficient number, since it is larger than the sum of its proper divisors (70205059371).

116919891285 is a wasteful number, since it uses less digits than its factorization.

116919891285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2213532.

The product of its digits is 2799360, while the sum is 60.

The spelling of 116919891285 in words is "one hundred sixteen billion, nine hundred nineteen million, eight hundred ninety-one thousand, two hundred eighty-five".