12689509569 has 8 divisors (see below), whose sum is σ = 18457468512. Its totient is φ = 7690611840.

The previous prime is 12689509559. The next prime is 12689509579. The reversal of 12689509569 is 96590598621.

It is an interprime number because it is at equal distance from previous prime (12689509559) and next prime (12689509579).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12689509569 - 2¹⁷ = 12689378497 is a prime.

It is a super-2 number, since 2×12689509569² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12689509519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192265264 + ... + 192265329.

It is an arithmetic number, because the mean of its divisors is an integer number (2307183564).

Almost surely, 2^12689509569 is an apocalyptic number.

It is an amenable number.

12689509569 is a deficient number, since it is larger than the sum of its proper divisors (5767958943).

12689509569 is a wasteful number, since it uses less digits than its factorization.

12689509569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384530607.

The product of its (nonzero) digits is 10497600, while the sum is 60.

The spelling of 12689509569 in words is "twelve billion, six hundred eighty-nine million, five hundred nine thousand, five hundred sixty-nine".