12116982985 has 8 divisors (see below), whose sum is σ = 15395696136. Its totient is φ = 9123375360.

The previous prime is 12116982973. The next prime is 12116983033. The reversal of 12116982985 is 58928961121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 514246329 + 11602736656 = 22677^2 + 107716^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12116982985 - 2⁵ = 12116982953 is a prime.

It is a super-3 number, since 3×12116982985³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71276286 + ... + 71276455.

It is an arithmetic number, because the mean of its divisors is an integer number (1924462017).

Almost surely, 2^12116982985 is an apocalyptic number.

It is an amenable number.

12116982985 is a deficient number, since it is larger than the sum of its proper divisors (3278713151).

12116982985 is a wasteful number, since it uses less digits than its factorization.

12116982985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142552763.

The product of its digits is 622080, while the sum is 52.

The spelling of 12116982985 in words is "twelve billion, one hundred sixteen million, nine hundred eighty-two thousand, nine hundred eighty-five".