13687809529 has 2 divisors, whose sum is σ = 13687809530. Its totient is φ = 13687809528.

The previous prime is 13687809511. The next prime is 13687809547. The reversal of 13687809529 is 92590878631.

It is a balanced prime because it is at equal distance from previous prime (13687809511) and next prime (13687809547).

It can be written as a sum of positive squares in only one way, i.e., 12377007504 + 1310802025 = 111252^2 + 36205^2 .

It is a cyclic number.

It is not a de Polignac number, because 13687809529 - 2²³ = 13679420921 is a prime.

It is a super-2 number, since 2×13687809529² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13687009529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6843904764 + 6843904765.

It is an arithmetic number, because the mean of its divisors is an integer number (6843904765).

Almost surely, 2^13687809529 is an apocalyptic number.

It is an amenable number.

13687809529 is a deficient number, since it is larger than the sum of its proper divisors (1).

13687809529 is an equidigital number, since it uses as much as digits as its factorization.

13687809529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6531840, while the sum is 58.

The spelling of 13687809529 in words is "thirteen billion, six hundred eighty-seven million, eight hundred nine thousand, five hundred twenty-nine".