1121178645544 has 16 divisors (see below), whose sum is σ = 2225869370100. Its totient is φ = 527613480192.

The previous prime is 1121178645541. The next prime is 1121178645563. The reversal of 1121178645544 is 4455468711211.

It can be written as a sum of positive squares in 2 ways, for example, as 844542620100 + 276636025444 = 918990^2 + 525962^2 .

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 3 ways as a sum of consecutive naturals, for example, 4121980179 + ... + 4121980450.

Almost surely, 2^{1121178645544} is an apocalyptic number.

It is an amenable number.

1121178645544 is a deficient number, since it is larger than the sum of its proper divisors (1104690724556).

1121178645544 is a wasteful number, since it uses less digits than its factorization.

1121178645544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8243960652 (or 8243960648 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 49.

The spelling of 1121178645544 in words is "one trillion, one hundred twenty-one billion, one hundred seventy-eight million, six hundred forty-five thousand, five hundred forty-four".