1311566087478 has 16 divisors (see below), whose sum is σ = 2694027639600. Its totient is φ = 425372785056.

The previous prime is 1311566087471. The next prime is 1311566087483. The reversal of 1311566087478 is 8747806651131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311566087471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2953977453 + ... + 2953977896.

It is an arithmetic number, because the mean of its divisors is an integer number (168376727475).

Almost surely, 2^{1311566087478} is an apocalyptic number.

1311566087478 is an abundant number, since it is smaller than the sum of its proper divisors (1382461552122).

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

1311566087478 is a wasteful number, since it uses less digits than its factorization.

1311566087478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5907955391.

The product of its (nonzero) digits is 6773760, while the sum is 57.

The spelling of 1311566087478 in words is "one trillion, three hundred eleven billion, five hundred sixty-six million, eighty-seven thousand, four hundred seventy-eight".