12116506365 has 64 divisors (see below), whose sum is σ = 22292709120. Its totient is φ = 6239151360.

The previous prime is 12116506343. The next prime is 12116506387. The reversal of 12116506365 is 56360561121.

12116506365 is a `hidden beast` number, since 1 + 2 + 1 + 16 + 5 + 0 + 636 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (12116506343) and next prime (12116506387).

It is not a de Polignac number, because 12116506365 - 2¹⁶ = 12116440829 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 645087 + ... + 663603.

It is an arithmetic number, because the mean of its divisors is an integer number (348323580).

Almost surely, 2^12116506365 is an apocalyptic number.

12116506365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12116506365 is a deficient number, since it is larger than the sum of its proper divisors (10176202755).

12116506365 is a wasteful number, since it uses less digits than its factorization.

12116506365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18699 (or 18693 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The spelling of 12116506365 in words is "twelve billion, one hundred sixteen million, five hundred six thousand, three hundred sixty-five".