1312552078368 has 48 divisors (see below), whose sum is σ = 3445901930016. Its totient is φ = 437459870720.

The previous prime is 1312552078303. The next prime is 1312552078373. The reversal of 1312552078368 is 8638702552131.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 1312552078368.

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, 160713 + ... + 1628168.

It is an arithmetic number, because the mean of its divisors is an integer number (71789623542).

Almost surely, 2^{1312552078368} is an apocalyptic number.

It is an amenable number.

1312552078368 is an abundant number, since it is smaller than the sum of its proper divisors (2133349851648).

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

1312552078368 is a wasteful number, since it uses less digits than its factorization.

1312552078368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1796537 (or 1796529 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 51.

The spelling of 1312552078368 in words is "one trillion, three hundred twelve billion, five hundred fifty-two million, seventy-eight thousand, three hundred sixty-eight".