116581523658 has 16 divisors (see below), whose sum is σ = 233171137920. Its totient is φ = 38859159456.

The previous prime is 116581523657. The next prime is 116581523683. The reversal of 116581523658 is 856325185611.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 116581523658.

It is not an unprimeable number, because it can be changed into a prime (116581523657) 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, 141010 + ... + 503037.

It is an arithmetic number, because the mean of its divisors is an integer number (14573196120).

Almost surely, 2^116581523658 is an apocalyptic number.

116581523658 is an abundant number, since it is smaller than the sum of its proper divisors (116589614262).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

116581523658 is a wasteful number, since it uses less digits than its factorization.

116581523658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674221.

The product of its digits is 1728000, while the sum is 51.

The spelling of 116581523658 in words is "one hundred sixteen billion, five hundred eighty-one million, five hundred twenty-three thousand, six hundred fifty-eight".