1313674066261 has 4 divisors (see below), whose sum is σ = 1338460369452. Its totient is φ = 1288887763072.

The previous prime is 1313674066253. The next prime is 1313674066277. The reversal of 1313674066261 is 1626604763131.

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 733068165636 + 580605900625 = 856194^2 + 761975^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313674066261 - 2³ = 1313674066253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313674069261) 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, 12393151516 + ... + 12393151621.

It is an arithmetic number, because the mean of its divisors is an integer number (334615092363).

Almost surely, 2^{1313674066261} is an apocalyptic number.

It is an amenable number.

1313674066261 is a deficient number, since it is larger than the sum of its proper divisors (24786303191).

1313674066261 is an equidigital number, since it uses as much as digits as its factorization.

1313674066261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24786303190.

The product of its (nonzero) digits is 653184, while the sum is 46.

The spelling of 1313674066261 in words is "one trillion, three hundred thirteen billion, six hundred seventy-four million, sixty-six thousand, two hundred sixty-one".