12854478259 has 32 divisors (see below), whose sum is σ = 16008192000. Its totient is φ = 10294774560.

The previous prime is 12854478251. The next prime is 12854478271. The reversal of 12854478259 is 95287445821.

It is not a de Polignac number, because 12854478259 - 2³ = 12854478251 is a prime.

It is a super-2 number, since 2×12854478259² (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 (12854478251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 287514 + ... + 329200.

It is an arithmetic number, because the mean of its divisors is an integer number (500256000).

Almost surely, 2^12854478259 is an apocalyptic number.

12854478259 is a deficient number, since it is larger than the sum of its proper divisors (3153713741).

12854478259 is an equidigital number, since it uses as much as digits as its factorization.

12854478259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41768 (or 41754 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 55.

The spelling of 12854478259 in words is "twelve billion, eight hundred fifty-four million, four hundred seventy-eight thousand, two hundred fifty-nine".