1161418264556 has 24 divisors (see below), whose sum is σ = 2217319408080. Its totient is φ = 527901593600.

The previous prime is 1161418264519. The next prime is 1161418264561. The reversal of 1161418264556 is 6554628141611.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1160780 + ... + 1915788.

It is an arithmetic number, because the mean of its divisors is an integer number (92388308670).

Almost surely, 2^{1161418264556} is an apocalyptic number.

It is an amenable number.

1161418264556 is a deficient number, since it is larger than the sum of its proper divisors (1055901143524).

1161418264556 is a wasteful number, since it uses less digits than its factorization.

1161418264556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789985 (or 789983 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 50.

The spelling of 1161418264556 in words is "one trillion, one hundred sixty-one billion, four hundred eighteen million, two hundred sixty-four thousand, five hundred fifty-six".