12695469553 has 4 divisors (see below), whose sum is σ = 13672044148. Its totient is φ = 11718894960.

The previous prime is 12695469539. The next prime is 12695469581. The reversal of 12695469553 is 35596459621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5930078049 + 6765391504 = 77007^2 + 82252^2 .

It is a cyclic number.

It is not a de Polignac number, because 12695469553 - 2⁹ = 12695469041 is a prime.

It is a super-2 number, since 2×12695469553² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12695469494 and 12695469503.

It is not an unprimeable number, because it can be changed into a prime (12695469953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 488287278 + ... + 488287303.

It is an arithmetic number, because the mean of its divisors is an integer number (3418011037).

Almost surely, 2^12695469553 is an apocalyptic number.

12695469553 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12695469553 is a deficient number, since it is larger than the sum of its proper divisors (976574595).

12695469553 is an equidigital number, since it uses as much as digits as its factorization.

12695469553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 976574594.

The product of its digits is 8748000, while the sum is 55.

The spelling of 12695469553 in words is "twelve billion, six hundred ninety-five million, four hundred sixty-nine thousand, five hundred fifty-three".