1311440045000 has 40 divisors (see below), whose sum is σ = 3072704037150. Its totient is φ = 524576016000.

The previous prime is 1311440044933. The next prime is 1311440045053. The reversal of 1311440045000 is 5400441131.

It can be written as a sum of positive squares in 5 ways, for example, as 208759437604 + 1102680607396 = 456902^2 + 1050086^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 131139005 + ... + 131149004.

Almost surely, 2^{1311440045000} is an apocalyptic number.

1311440045000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1311440045000 is an abundant number, since it is smaller than the sum of its proper divisors (1761263992150).

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

1311440045000 is an equidigital number, since it uses as much as digits as its factorization.

1311440045000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262288035 (or 262288016 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 1311440045000 its reverse (5400441131), we get a palindrome (1316840486131).

The spelling of 1311440045000 in words is "one trillion, three hundred eleven billion, four hundred forty million, forty-five thousand".