1311255533004 has 96 divisors (see below), whose sum is σ = 3276890769600. Its totient is φ = 406638059520.

The previous prime is 1311255532997. The next prime is 1311255533023. The reversal of 1311255533004 is 4003355521131.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83891062 + ... + 83906690.

It is an arithmetic number, because the mean of its divisors is an integer number (34134278850).

Almost surely, 2^{1311255533004} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1311255533004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1638445384800).

1311255533004 is an abundant number, since it is smaller than the sum of its proper divisors (1965635236596).

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

1311255533004 is a wasteful number, since it uses less digits than its factorization.

1311255533004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20363 (or 20361 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 33.

The spelling of 1311255533004 in words is "one trillion, three hundred eleven billion, two hundred fifty-five million, five hundred thirty-three thousand, four".