12865655734 has 4 divisors (see below), whose sum is σ = 19298483604. Its totient is φ = 6432827866.

The previous prime is 12865655597. The next prime is 12865655773. The reversal of 12865655734 is 43755656821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43755656821 = 8867 ⋅4934663.

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, 3216413932 + ... + 3216413935.

It is an arithmetic number, because the mean of its divisors is an integer number (4824620901).

Almost surely, 2^12865655734 is an apocalyptic number.

12865655734 is a deficient number, since it is larger than the sum of its proper divisors (6432827870).

12865655734 is an equidigital number, since it uses as much as digits as its factorization.

12865655734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6432827869.

The product of its digits is 6048000, while the sum is 52.

The spelling of 12865655734 in words is "twelve billion, eight hundred sixty-five million, six hundred fifty-five thousand, seven hundred thirty-four".