12674406721 has 8 divisors (see below), whose sum is σ = 13019221800. Its totient is φ = 12329710848.

The previous prime is 12674406673. The next prime is 12674406743. The reversal of 12674406721 is 12760447621.

It can be written as a sum of positive squares in 4 ways, for example, as 11055471025 + 1618935696 = 105145^2 + 40236^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12674406721 - 2¹⁹ = 12673882433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12674406751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212055 + ... + 265171.

It is an arithmetic number, because the mean of its divisors is an integer number (1627402725).

Almost surely, 2^12674406721 is an apocalyptic number.

It is an amenable number.

12674406721 is a deficient number, since it is larger than the sum of its proper divisors (344815079).

12674406721 is an equidigital number, since it uses as much as digits as its factorization.

12674406721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59603.

The product of its (nonzero) digits is 112896, while the sum is 40.

The spelling of 12674406721 in words is "twelve billion, six hundred seventy-four million, four hundred six thousand, seven hundred twenty-one".