1311629949835 has 4 divisors (see below), whose sum is σ = 1573955939808. Its totient is φ = 1049303959864.

The previous prime is 1311629949821. The next prime is 1311629949871. The reversal of 1311629949835 is 5389499261131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311629949835 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131162994979 + ... + 131162994988.

It is an arithmetic number, because the mean of its divisors is an integer number (393488984952).

Almost surely, 2^{1311629949835} is an apocalyptic number.

1311629949835 is a deficient number, since it is larger than the sum of its proper divisors (262325989973).

1311629949835 is an equidigital number, since it uses as much as digits as its factorization.

1311629949835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262325989972.

The product of its digits is 12597120, while the sum is 61.

The spelling of 1311629949835 in words is "one trillion, three hundred eleven billion, six hundred twenty-nine million, nine hundred forty-nine thousand, eight hundred thirty-five".