13775247249 has 16 divisors (see below), whose sum is σ = 18806833152. Its totient is φ = 8964601808.

The previous prime is 13775247217. The next prime is 13775247263. The reversal of 13775247249 is 94274257731.

It is a cyclic number.

It is not a de Polignac number, because 13775247249 - 2⁵ = 13775247217 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (13775240249) 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, 73539 + ... + 181544.

It is an arithmetic number, because the mean of its divisors is an integer number (1175427072).

Almost surely, 2^13775247249 is an apocalyptic number.

It is an amenable number.

13775247249 is a deficient number, since it is larger than the sum of its proper divisors (5031585903).

13775247249 is a wasteful number, since it uses less digits than its factorization.

13775247249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255516.

The product of its digits is 2963520, while the sum is 51.

The spelling of 13775247249 in words is "thirteen billion, seven hundred seventy-five million, two hundred forty-seven thousand, two hundred forty-nine".