1312965547488 has 144 divisors (see below), whose sum is σ = 4295777522400. Its totient is φ = 372615257088.

The previous prime is 1312965547459. The next prime is 1312965547589. The reversal of 1312965547488 is 8847455692131.

It is a happy number.

1312965547488 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 9 + 6 + 5 + 547 + 4 + 88 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×1312965547488² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1885095 + ... + 2485862.

It is an arithmetic number, because the mean of its divisors is an integer number (29831788350).

Almost surely, 2^{1312965547488} is an apocalyptic number.

1312965547488 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1312965547488 is an abundant number, since it is smaller than the sum of its proper divisors (2982811974912).

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

1312965547488 is a wasteful number, since it uses less digits than its factorization.

1312965547488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4371129 (or 4371118 counting only the distinct ones).

The product of its digits is 58060800, while the sum is 63.

The spelling of 1312965547488 in words is "one trillion, three hundred twelve billion, nine hundred sixty-five million, five hundred forty-seven thousand, four hundred eighty-eight".