1311440140044 has 72 divisors (see below), whose sum is σ = 3392808619200. Its totient is φ = 426894203232.

The previous prime is 1311440140007. The next prime is 1311440140051. The reversal of 1311440140044 is 4400410441131.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7810179 + ... + 7976325.

Almost surely, 2^{1311440140044} is an apocalyptic number.

It is an amenable number.

1311440140044 is an abundant number, since it is smaller than the sum of its proper divisors (2081368479156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311440140044 is a wasteful number, since it uses less digits than its factorization.

1311440140044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171299 (or 171294 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 1311440140044 its reverse (4400410441131), we get a palindrome (5711850581175).

The spelling of 1311440140044 in words is "one trillion, three hundred eleven billion, four hundred forty million, one hundred forty thousand, forty-four".