11531367062543 has 4 divisors (see below), whose sum is σ = 11531389323480. Its totient is φ = 11531344801608.

The previous prime is 11531367062441. The next prime is 11531367062599. The reversal of 11531367062543 is 34526076313511.

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 11531367062543 - 2¹⁸ = 11531366800399 is a prime.

It is a super-2 number, since 2×11531367062543² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11531367262543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10334480 + ... + 11395797.

It is an arithmetic number, because the mean of its divisors is an integer number (2882847330870).

Almost surely, 2^{11531367062543} is an apocalyptic number.

11531367062543 is a deficient number, since it is larger than the sum of its proper divisors (22260937).

11531367062543 is an equidigital number, since it uses as much as digits as its factorization.

11531367062543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22260936.

The product of its (nonzero) digits is 1360800, while the sum is 47.

The spelling of 11531367062543 in words is "eleven trillion, five hundred thirty-one billion, three hundred sixty-seven million, sixty-two thousand, five hundred forty-three".