1312456533139 has 4 divisors (see below), whose sum is σ = 1317127197240. Its totient is φ = 1307785869040.

The previous prime is 1312456533107. The next prime is 1312456533163. The reversal of 1312456533139 is 9313356542131.

It is a happy number.

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 1312456533139 - 2⁵ = 1312456533107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312450533139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2335331629 + ... + 2335332190.

It is an arithmetic number, because the mean of its divisors is an integer number (329281799310).

Almost surely, 2^{1312456533139} is an apocalyptic number.

1312456533139 is a deficient number, since it is larger than the sum of its proper divisors (4670664101).

1312456533139 is an equidigital number, since it uses as much as digits as its factorization.

1312456533139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4670664100.

The product of its digits is 874800, while the sum is 46.

The spelling of 1312456533139 in words is "one trillion, three hundred twelve billion, four hundred fifty-six million, five hundred thirty-three thousand, one hundred thirty-nine".