3261851289313 has 4 divisors (see below), whose sum is σ = 3266504430228. Its totient is φ = 3257198148400.

The previous prime is 3261851289299. The next prime is 3261851289337. The reversal of 3261851289313 is 3139821581623.

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 1965332021409 + 1296519267904 = 1401903^2 + 1138648^2 .

It is a cyclic number.

It is not a de Polignac number, because 3261851289313 - 2³⁷ = 3124412335841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3261851289413) 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, 2326569406 + ... + 2326570807.

It is an arithmetic number, because the mean of its divisors is an integer number (816626107557).

Almost surely, 2^{3261851289313} is an apocalyptic number.

It is an amenable number.

3261851289313 is a deficient number, since it is larger than the sum of its proper divisors (4653140915).

3261851289313 is an equidigital number, since it uses as much as digits as its factorization.

3261851289313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4653140914.

The product of its digits is 1866240, while the sum is 52.

The spelling of 3261851289313 in words is "three trillion, two hundred sixty-one billion, eight hundred fifty-one million, two hundred eighty-nine thousand, three hundred thirteen".