1126564501543 has 4 divisors (see below), whose sum is σ = 1213223309368. Its totient is φ = 1039905693720.

The previous prime is 1126564501529. The next prime is 1126564501549. The reversal of 1126564501543 is 3451054656211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1126564501543 - 2⁵ = 1126564501511 is a prime.

It is a super-2 number, since 2×1126564501543² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1126564501543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1126564501549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43329403893 + ... + 43329403918.

It is an arithmetic number, because the mean of its divisors is an integer number (303305827342).

Almost surely, 2^{1126564501543} is an apocalyptic number.

1126564501543 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1126564501543 is a deficient number, since it is larger than the sum of its proper divisors (86658807825).

1126564501543 is an equidigital number, since it uses as much as digits as its factorization.

1126564501543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86658807824.

The product of its (nonzero) digits is 432000, while the sum is 43.

The spelling of 1126564501543 in words is "one trillion, one hundred twenty-six billion, five hundred sixty-four million, five hundred one thousand, five hundred forty-three".