12206561615 has 8 divisors (see below), whose sum is σ = 15005139408. Its totient is φ = 9527072320.

The previous prime is 12206561611. The next prime is 12206561641. The reversal of 12206561615 is 51616560221.

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

It is not a de Polignac number, because 12206561615 - 2² = 12206561611 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12206561611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29771897 + ... + 29772306.

It is an arithmetic number, because the mean of its divisors is an integer number (1875642426).

Almost surely, 2^12206561615 is an apocalyptic number.

12206561615 is a deficient number, since it is larger than the sum of its proper divisors (2798577793).

12206561615 is an equidigital number, since it uses as much as digits as its factorization.

12206561615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59544249.

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 12206561615 in words is "twelve billion, two hundred six million, five hundred sixty-one thousand, six hundred fifteen".