1311051042160 has 40 divisors (see below), whose sum is σ = 3119081906160. Its totient is φ = 512224591872.

The previous prime is 1311051042157. The next prime is 1311051042173. The reversal of 1311051042160 is 612401501131.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190556305 + ... + 190563184.

It is an arithmetic number, because the mean of its divisors is an integer number (77977047654).

Almost surely, 2^{1311051042160} is an apocalyptic number.

1311051042160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1311051042160 is an abundant number, since it is smaller than the sum of its proper divisors (1808030864000).

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

1311051042160 is a wasteful number, since it uses less digits than its factorization.

1311051042160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381119545 (or 381119539 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

Adding to 1311051042160 its reverse (612401501131), we get a palindrome (1923452543291).

The spelling of 1311051042160 in words is "one trillion, three hundred eleven billion, fifty-one million, forty-two thousand, one hundred sixty".