12929741865 has 24 divisors (see below), whose sum is σ = 22617171720. Its totient is φ = 6832594944.

The previous prime is 12929741849. The next prime is 12929741873. The reversal of 12929741865 is 56814792921.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 48399849 + 12881342016 = 6957^2 + 113496^2 .

It is not a de Polignac number, because 12929741865 - 2⁴ = 12929741849 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1313112 + ... + 1322921.

It is an arithmetic number, because the mean of its divisors is an integer number (942382155).

Almost surely, 2^12929741865 is an apocalyptic number.

12929741865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12929741865 is a deficient number, since it is larger than the sum of its proper divisors (9687429855).

12929741865 is a wasteful number, since it uses less digits than its factorization.

12929741865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2636153 (or 2636150 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The spelling of 12929741865 in words is "twelve billion, nine hundred twenty-nine million, seven hundred forty-one thousand, eight hundred sixty-five".