12955815469 has 4 divisors (see below), whose sum is σ = 13002587644. Its totient is φ = 12909043296.

The previous prime is 12955815463. The next prime is 12955815493. The reversal of 12955815469 is 96451855921.

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 7927587369 + 5028228100 = 89037^2 + 70910^2 .

It is a cyclic number.

It is not a de Polignac number, because 12955815469 - 2¹⁷ = 12955684397 is a prime.

It is a super-2 number, since 2×12955815469² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12955815463) 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, 23385672 + ... + 23386225.

It is an arithmetic number, because the mean of its divisors is an integer number (3250646911).

Almost surely, 2^12955815469 is an apocalyptic number.

It is an amenable number.

12955815469 is a deficient number, since it is larger than the sum of its proper divisors (46772175).

12955815469 is an equidigital number, since it uses as much as digits as its factorization.

12955815469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46772174.

The product of its digits is 3888000, while the sum is 55.

The spelling of 12955815469 in words is "twelve billion, nine hundred fifty-five million, eight hundred fifteen thousand, four hundred sixty-nine".