12405514969 has 4 divisors (see below), whose sum is σ = 12669462144. Its totient is φ = 12141567796.

The previous prime is 12405514949. The next prime is 12405514997. The reversal of 12405514969 is 96941550421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12405514969 - 2²⁵ = 12371960537 is a prime.

It is a super-2 number, since 2×12405514969² (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 (12405514909) 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, 131973517 + ... + 131973610.

It is an arithmetic number, because the mean of its divisors is an integer number (3167365536).

Almost surely, 2^12405514969 is an apocalyptic number.

It is an amenable number.

12405514969 is a deficient number, since it is larger than the sum of its proper divisors (263947175).

12405514969 is an equidigital number, since it uses as much as digits as its factorization.

12405514969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263947174.

The product of its (nonzero) digits is 388800, while the sum is 46.

The spelling of 12405514969 in words is "twelve billion, four hundred five million, five hundred fourteen thousand, nine hundred sixty-nine".