1312044653412 has 18 divisors (see below), whose sum is σ = 3316557318438. Its totient is φ = 437348217792.

The previous prime is 1312044653411. The next prime is 1312044653429. The reversal of 1312044653412 is 2143564402131.

1312044653412 is a `hidden beast` number, since 1 + 3 + 120 + 446 + 53 + 41 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1229983030116 + 82061623296 = 1109046^2 + 286464^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×1312044653412² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 36445684817 = 1312044653412 / (1 + 3 + 1 + 2 + 0 + 4 + 4 + 6 + 5 + 3 + 4 + 1 + 2).

It is not an unprimeable number, because it can be changed into a prime (1312044653411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18222842373 + ... + 18222842444.

Almost surely, 2^{1312044653412} is an apocalyptic number.

1312044653412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1312044653412 is an abundant number, since it is smaller than the sum of its proper divisors (2004512665026).

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

1312044653412 is a wasteful number, since it uses less digits than its factorization.

1312044653412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36445684827 (or 36445684822 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 1312044653412 in words is "one trillion, three hundred twelve billion, forty-four million, six hundred fifty-three thousand, four hundred twelve".