1306326661336 has 32 divisors (see below), whose sum is σ = 2451186360000. Its totient is φ = 652677129216.

The previous prime is 1306326661307. The next prime is 1306326661337. The reversal of 1306326661336 is 6331666236031.

It is a super-2 number, since 2×1306326661336² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1306326661337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139010590 + ... + 139019986.

It is an arithmetic number, because the mean of its divisors is an integer number (76599573750).

Almost surely, 2^{1306326661336} is an apocalyptic number.

It is an amenable number.

1306326661336 is a deficient number, since it is larger than the sum of its proper divisors (1144859698664).

1306326661336 is a wasteful number, since it uses less digits than its factorization.

1306326661336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20491 (or 20487 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 46.

The spelling of 1306326661336 in words is "one trillion, three hundred six billion, three hundred twenty-six million, six hundred sixty-one thousand, three hundred thirty-six".