1311626425543 has 16 divisors (see below), whose sum is σ = 1504638553600. Its totient is φ = 1120029283296.

The previous prime is 1311626425511. The next prime is 1311626425609. The reversal of 1311626425543 is 3455246261131.

It is not a de Polignac number, because 1311626425543 - 2⁵ = 1311626425511 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1311626425543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311626425243) 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, 2504446 + ... + 2982532.

It is an arithmetic number, because the mean of its divisors is an integer number (94039909600).

Almost surely, 2^{1311626425543} is an apocalyptic number.

1311626425543 is a deficient number, since it is larger than the sum of its proper divisors (193012128057).

1311626425543 is a wasteful number, since it uses less digits than its factorization.

1311626425543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479566.

The product of its digits is 518400, while the sum is 43.

The spelling of 1311626425543 in words is "one trillion, three hundred eleven billion, six hundred twenty-six million, four hundred twenty-five thousand, five hundred forty-three".