1208664572913 has 18 divisors (see below), whose sum is σ = 2030885371554. Its totient is φ = 690665469984.

The previous prime is 1208664572897. The next prime is 1208664572939. The reversal of 1208664572913 is 3192754668021.

It is a happy number.

1208664572913 is a `hidden beast` number, since 1 + 2 + 0 + 8 + 6 + 64 + 572 + 9 + 1 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 958192350129 + 250472222784 = 978873^2 + 500472^2 .

It is not a de Polignac number, because 1208664572913 - 2⁴ = 1208664572897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1208664572913.

It is not an unprimeable number, because it can be changed into a prime (1208664572113) 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 17 ways as a sum of consecutive naturals, for example, 1370367556 + ... + 1370368437.

It is a 1-persistent number, because it is pandigital, but 2⋅1208664572913 = 2417329145826 is not.

Almost surely, 2^{1208664572913} is an apocalyptic number.

It is an amenable number.

1208664572913 is a deficient number, since it is larger than the sum of its proper divisors (822220798641).

1208664572913 is a wasteful number, since it uses less digits than its factorization.

1208664572913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2740736013 (or 2740736003 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 1208664572913 in words is "one trillion, two hundred eight billion, six hundred sixty-four million, five hundred seventy-two thousand, nine hundred thirteen".