12651225726278 has 4 divisors (see below), whose sum is σ = 18976838589420. Its totient is φ = 6325612863138.

The previous prime is 12651225726277. The next prime is 12651225726287. The reversal of 12651225726278 is 87262752215621.

12651225726278 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12651225726277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3162806431568 + ... + 3162806431571.

It is an arithmetic number, because the mean of its divisors is an integer number (4744209647355).

Almost surely, 2^{12651225726278} is an apocalyptic number.

12651225726278 is a deficient number, since it is larger than the sum of its proper divisors (6325612863142).

12651225726278 is an equidigital number, since it uses as much as digits as its factorization.

12651225726278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6325612863141.

The product of its digits is 11289600, while the sum is 56.

The spelling of 12651225726278 in words is "twelve trillion, six hundred fifty-one billion, two hundred twenty-five million, seven hundred twenty-six thousand, two hundred seventy-eight".