13280345287 has 16 divisors (see below), whose sum is σ = 14886203904. Its totient is φ = 11741220000.

The previous prime is 13280345269. The next prime is 13280345321. The reversal of 13280345287 is 78254308231.

It is a cyclic number.

It is not a de Polignac number, because 13280345287 - 2⁷ = 13280345159 is a prime.

It is a super-2 number, since 2×13280345287² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13280345207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1031862 + ... + 1044652.

It is an arithmetic number, because the mean of its divisors is an integer number (930387744).

Almost surely, 2^13280345287 is an apocalyptic number.

13280345287 is a deficient number, since it is larger than the sum of its proper divisors (1605858617).

13280345287 is a wasteful number, since it uses less digits than its factorization.

13280345287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15390.

The product of its (nonzero) digits is 322560, while the sum is 43.

The spelling of 13280345287 in words is "thirteen billion, two hundred eighty million, three hundred forty-five thousand, two hundred eighty-seven".