12754360340665 has 4 divisors (see below), whose sum is σ = 15305232408804. Its totient is φ = 10203488272528.

The previous prime is 12754360340663. The next prime is 12754360340677. The reversal of 12754360340665 is 56604306345721.

It is a happy number.

12754360340665 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 can be written as a sum of positive squares in 2 ways, for example, as 3740789228544 + 9013571112121 = 1934112^2 + 3002261^2 .

It is a cyclic number.

It is not a de Polignac number, because 12754360340665 - 2¹ = 12754360340663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12754360340663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1275436034062 + ... + 1275436034071.

It is an arithmetic number, because the mean of its divisors is an integer number (3826308102201).

Almost surely, 2^{12754360340665} is an apocalyptic number.

It is an amenable number.

12754360340665 is a deficient number, since it is larger than the sum of its proper divisors (2550872068139).

12754360340665 is an equidigital number, since it uses as much as digits as its factorization.

12754360340665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2550872068138.

The product of its (nonzero) digits is 10886400, while the sum is 52.

The spelling of 12754360340665 in words is "twelve trillion, seven hundred fifty-four billion, three hundred sixty million, three hundred forty thousand, six hundred sixty-five".