116666212305 has 16 divisors (see below), whose sum is σ = 187194746880. Its totient is φ = 62045710848.

The previous prime is 116666212303. The next prime is 116666212309. The reversal of 116666212305 is 503212666611.

It is not a de Polignac number, because 116666212305 - 2¹ = 116666212303 is a prime.

It is a super-2 number, since 2×116666212305² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (116666212303) 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, 11011345 + ... + 11021934.

It is an arithmetic number, because the mean of its divisors is an integer number (11699671680).

Almost surely, 2^116666212305 is an apocalyptic number.

116666212305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

116666212305 is a deficient number, since it is larger than the sum of its proper divisors (70528534575).

116666212305 is a wasteful number, since it uses less digits than its factorization.

116666212305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22033640.

The product of its (nonzero) digits is 77760, while the sum is 39.

Adding to 116666212305 its reverse (503212666611), we get a palindrome (619878878916).

The spelling of 116666212305 in words is "one hundred sixteen billion, six hundred sixty-six million, two hundred twelve thousand, three hundred five".