1312152644399 has 4 divisors (see below), whose sum is σ = 1312194346080. Its totient is φ = 1312110942720.

The previous prime is 1312152644393. The next prime is 1312152644401. The reversal of 1312152644399 is 9934462512131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1312152644399 - 2³² = 1307857677103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312152644393) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 20803607 + ... + 20866584.

It is an arithmetic number, because the mean of its divisors is an integer number (328048586520).

Almost surely, 2^{1312152644399} is an apocalyptic number.

1312152644399 is a deficient number, since it is larger than the sum of its proper divisors (41701681).

1312152644399 is an equidigital number, since it uses as much as digits as its factorization.

1312152644399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41701680.

The product of its digits is 1399680, while the sum is 50.

The spelling of 1312152644399 in words is "one trillion, three hundred twelve billion, one hundred fifty-two million, six hundred forty-four thousand, three hundred ninety-nine".