13840724287 has 64 divisors (see below), whose sum is σ = 16753623040. Its totient is φ = 11316412800.

The previous prime is 13840724257. The next prime is 13840724291. The reversal of 13840724287 is 78242704831.

It is a cyclic number.

It is not a de Polignac number, because 13840724287 - 2²³ = 13832335679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13840724257) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 41814712 + ... + 41815042.

It is an arithmetic number, because the mean of its divisors is an integer number (261775360).

Almost surely, 2^13840724287 is an apocalyptic number.

13840724287 is a deficient number, since it is larger than the sum of its proper divisors (2912898753).

13840724287 is a wasteful number, since it uses less digits than its factorization.

13840724287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564.

The product of its (nonzero) digits is 602112, while the sum is 46.

The spelling of 13840724287 in words is "thirteen billion, eight hundred forty million, seven hundred twenty-four thousand, two hundred eighty-seven".