12895898278 has 4 divisors (see below), whose sum is σ = 19343847420. Its totient is φ = 6447949138.

The previous prime is 12895898269. The next prime is 12895898303. The reversal of 12895898278 is 87289859821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87289859821 = 239 ⋅365229539.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3223974568 + ... + 3223974571.

It is an arithmetic number, because the mean of its divisors is an integer number (4835961855).

Almost surely, 2^12895898278 is an apocalyptic number.

12895898278 is a deficient number, since it is larger than the sum of its proper divisors (6447949142).

12895898278 is an equidigital number, since it uses as much as digits as its factorization.

12895898278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6447949141.

The product of its digits is 46448640, while the sum is 67.

The spelling of 12895898278 in words is "twelve billion, eight hundred ninety-five million, eight hundred ninety-eight thousand, two hundred seventy-eight".