13281778607045 has 16 divisors (see below), whose sum is σ = 17717826749952. Its totient is φ = 9491692898880.

The previous prime is 13281778607039. The next prime is 13281778607077. The reversal of 13281778607045 is 54070687718231.

It is a happy number.

It is not a de Polignac number, because 13281778607045 - 2¹⁰ = 13281778606021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3295724687 + ... + 3295728716.

It is an arithmetic number, because the mean of its divisors is an integer number (1107364171872).

Almost surely, 2^{13281778607045} is an apocalyptic number.

It is an amenable number.

13281778607045 is a deficient number, since it is larger than the sum of its proper divisors (4436048142907).

13281778607045 is a wasteful number, since it uses less digits than its factorization.

13281778607045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6591453452.

The product of its (nonzero) digits is 15805440, while the sum is 59.

The spelling of 13281778607045 in words is "thirteen trillion, two hundred eighty-one billion, seven hundred seventy-eight million, six hundred seven thousand, forty-five".