1121178645543 has 32 divisors (see below), whose sum is σ = 1758506400000. Its totient is φ = 628037971200.

The previous prime is 1121178645541. The next prime is 1121178645563. The reversal of 1121178645543 is 3455468711211.

It is not a de Polignac number, because 1121178645543 - 2¹ = 1121178645541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121178645492 and 1121178645501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121178645541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21781168 + ... + 21832581.

It is an arithmetic number, because the mean of its divisors is an integer number (54953325000).

Almost surely, 2^{1121178645543} is an apocalyptic number.

1121178645543 is a deficient number, since it is larger than the sum of its proper divisors (637327754457).

1121178645543 is a wasteful number, since it uses less digits than its factorization.

1121178645543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43613823.

The product of its digits is 806400, while the sum is 48.

The spelling of 1121178645543 in words is "one trillion, one hundred twenty-one billion, one hundred seventy-eight million, six hundred forty-five thousand, five hundred forty-three".