1311338503066 has 16 divisors (see below), whose sum is σ = 1973392646184. Its totient is φ = 653541168384.

The previous prime is 1311338503043. The next prime is 1311338503087. The reversal of 1311338503066 is 6603058331131.

It can be written as a sum of positive squares in 4 ways, for example, as 964451664225 + 346886838841 = 982065^2 + 588971^2 .

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, 16193670 + ... + 16274446.

Almost surely, 2^{1311338503066} is an apocalyptic number.

1311338503066 is a deficient number, since it is larger than the sum of its proper divisors (662054143118).

1311338503066 is a wasteful number, since it uses less digits than its factorization.

1311338503066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107025.

The product of its (nonzero) digits is 116640, while the sum is 40.

The spelling of 1311338503066 in words is "one trillion, three hundred eleven billion, three hundred thirty-eight million, five hundred three thousand, sixty-six".