13143677769 has 6 divisors (see below), whose sum is σ = 18985312346. Its totient is φ = 8762451840.

The previous prime is 13143677761. The next prime is 13143677779. The reversal of 13143677769 is 96777634131.

13143677769 is a `hidden beast` number, since 131 + 436 + 7 + 7 + 76 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9204483600 + 3939194169 = 95940^2 + 62763^2 .

It is not a de Polignac number, because 13143677769 - 2³ = 13143677761 is a prime.

It is a super-2 number, since 2×13143677769² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13143677761) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 730204312 + ... + 730204329.

Almost surely, 2^13143677769 is an apocalyptic number.

It is an amenable number.

13143677769 is a deficient number, since it is larger than the sum of its proper divisors (5841634577).

13143677769 is a wasteful number, since it uses less digits than its factorization.

13143677769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1460408647 (or 1460408644 counting only the distinct ones).

The product of its digits is 4000752, while the sum is 54.

The spelling of 13143677769 in words is "thirteen billion, one hundred forty-three million, six hundred seventy-seven thousand, seven hundred sixty-nine".