13233959649 has 12 divisors (see below), whose sum is σ = 19118591700. Its totient is φ = 8821314144.

The previous prime is 13233959647. The next prime is 13233959681. The reversal of 13233959649 is 94695933231.

13233959649 is a `hidden beast` number, since 1 + 3 + 2 + 3 + 3 + 9 + 596 + 49 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6692385249 + 6541574400 = 81807^2 + 80880^2 .

It is not a de Polignac number, because 13233959649 - 2¹ = 13233959647 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 13233959595 and 13233959604.

It is not an unprimeable number, because it can be changed into a prime (13233959647) 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, 45214 + ... + 168855.

It is an arithmetic number, because the mean of its divisors is an integer number (1593215975).

Almost surely, 2^13233959649 is an apocalyptic number.

It is an amenable number.

13233959649 is a deficient number, since it is larger than the sum of its proper divisors (5884632051).

13233959649 is a wasteful number, since it uses less digits than its factorization.

13233959649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220944 (or 220941 counting only the distinct ones).

The product of its digits is 4723920, while the sum is 54.

The spelling of 13233959649 in words is "thirteen billion, two hundred thirty-three million, nine hundred fifty-nine thousand, six hundred forty-nine".