12231365615 has 64 divisors (see below), whose sum is σ = 19509258240. Its totient is φ = 7153090560.

The previous prime is 12231365591. The next prime is 12231365623. The reversal of 12231365615 is 51656313221.

It is a de Polignac number, because none of the positive numbers 2^k-12231365615 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

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, 236495 + ... + 283535.

It is an arithmetic number, because the mean of its divisors is an integer number (304832160).

Almost surely, 2^12231365615 is an apocalyptic number.

12231365615 is a deficient number, since it is larger than the sum of its proper divisors (7277892625).

12231365615 is a wasteful number, since it uses less digits than its factorization.

12231365615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47112.

The product of its digits is 32400, while the sum is 35.

Adding to 12231365615 its reverse (51656313221), we get a palindrome (63887678836).

The spelling of 12231365615 in words is "twelve billion, two hundred thirty-one million, three hundred sixty-five thousand, six hundred fifteen".