1311255533005 has 8 divisors (see below), whose sum is σ = 1716552697824. Its totient is φ = 953640387600.

The previous prime is 1311255532997. The next prime is 1311255533023. The reversal of 1311255533005 is 5003355521131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1311255533005 - 2³ = 1311255532997 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 11920504791 + ... + 11920504900.

It is an arithmetic number, because the mean of its divisors is an integer number (214569087228).

Almost surely, 2^{1311255533005} is an apocalyptic number.

It is an amenable number.

1311255533005 is a deficient number, since it is larger than the sum of its proper divisors (405297164819).

1311255533005 is a wasteful number, since it uses less digits than its factorization.

1311255533005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23841009707.

The product of its (nonzero) digits is 33750, while the sum is 34.

The spelling of 1311255533005 in words is "one trillion, three hundred eleven billion, two hundred fifty-five million, five hundred thirty-three thousand, five".