13242331665 has 12 divisors (see below), whose sum is σ = 22953374964. Its totient is φ = 7062576864.

The previous prime is 13242331607. The next prime is 13242331667. The reversal of 13242331665 is 56613324231.

It can be written as a sum of positive squares in 2 ways, for example, as 1490037201 + 11752294464 = 38601^2 + 108408^2 .

It is not a de Polignac number, because 13242331665 - 2¹⁵ = 13242298897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13242331667) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 147136974 + ... + 147137063.

It is an arithmetic number, because the mean of its divisors is an integer number (1912781247).

Almost surely, 2^13242331665 is an apocalyptic number.

13242331665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13242331665 is a deficient number, since it is larger than the sum of its proper divisors (9711043299).

13242331665 is a wasteful number, since it uses less digits than its factorization.

13242331665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294274048 (or 294274045 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

Adding to 13242331665 its reverse (56613324231), we get a palindrome (69855655896).

The spelling of 13242331665 in words is "thirteen billion, two hundred forty-two million, three hundred thirty-one thousand, six hundred sixty-five".