11071611543 has 16 divisors (see below), whose sum is σ = 15832298880. Its totient is φ = 6860659104.

The previous prime is 11071611533. The next prime is 11071611557. The reversal of 11071611543 is 34511617011.

It is not a de Polignac number, because 11071611543 - 2⁶ = 11071611479 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11071611543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11071611533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1829421 + ... + 1835462.

It is an arithmetic number, because the mean of its divisors is an integer number (989518680).

Almost surely, 2^11071611543 is an apocalyptic number.

11071611543 is a deficient number, since it is larger than the sum of its proper divisors (4760687337).

11071611543 is a wasteful number, since it uses less digits than its factorization.

11071611543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3664958.

The product of its (nonzero) digits is 2520, while the sum is 30.

The spelling of 11071611543 in words is "eleven billion, seventy-one million, six hundred eleven thousand, five hundred forty-three".