1311625641326 has 32 divisors (see below), whose sum is σ = 2641595701248. Its totient is φ = 471713516640.

The previous prime is 1311625641311. The next prime is 1311625641343. The reversal of 1311625641326 is 6231465261131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 327576830 + ... + 327580833.

It is an arithmetic number, because the mean of its divisors is an integer number (82549865664).

Almost surely, 2^{1311625641326} is an apocalyptic number.

1311625641326 is an abundant number, since it is smaller than the sum of its proper divisors (1329970059922).

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

1311625641326 is a wasteful number, since it uses less digits than its factorization.

1311625641326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655157696.

The product of its digits is 155520, while the sum is 41.

The spelling of 1311625641326 in words is "one trillion, three hundred eleven billion, six hundred twenty-five million, six hundred forty-one thousand, three hundred twenty-six".