1331266043213 has 16 divisors (see below), whose sum is σ = 1380435581952. Its totient is φ = 1282951440000.

The previous prime is 1331266043197. The next prime is 1331266043249. The reversal of 1331266043213 is 3123406621331.

It is a cyclic number.

It is not a de Polignac number, because 1331266043213 - 2⁴ = 1331266043197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331266043713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1411820 + ... + 2157722.

It is an arithmetic number, because the mean of its divisors is an integer number (86277223872).

Almost surely, 2^{1331266043213} is an apocalyptic number.

It is an amenable number.

1331266043213 is a deficient number, since it is larger than the sum of its proper divisors (49169538739).

1331266043213 is a wasteful number, since it uses less digits than its factorization.

1331266043213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746476.

The product of its (nonzero) digits is 46656, while the sum is 35.

The spelling of 1331266043213 in words is "one trillion, three hundred thirty-one billion, two hundred sixty-six million, forty-three thousand, two hundred thirteen".