1265336343361 has 8 divisors (see below), whose sum is σ = 1266400270440. Its totient is φ = 1264272546432.

The previous prime is 1265336343343. The next prime is 1265336343371. The reversal of 1265336343361 is 1633436335621.

It can be written as a sum of positive squares in 4 ways, for example, as 3407640625 + 1261928702736 = 58375^2 + 1123356^2 .

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 1265336343361 - 2⁷ = 1265336343233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1265336343371) 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, 33408711 + ... + 33446563.

It is an arithmetic number, because the mean of its divisors is an integer number (158300033805).

Almost surely, 2^{1265336343361} is an apocalyptic number.

It is an amenable number.

1265336343361 is a deficient number, since it is larger than the sum of its proper divisors (1063927079).

1265336343361 is a wasteful number, since it uses less digits than its factorization.

1265336343361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65075.

The product of its digits is 2099520, while the sum is 46.

The spelling of 1265336343361 in words is "one trillion, two hundred sixty-five billion, three hundred thirty-six million, three hundred forty-three thousand, three hundred sixty-one".