1161112403556 has 36 divisors (see below), whose sum is σ = 3354324722112. Its totient is φ = 331746400944.

The previous prime is 1161112403531. The next prime is 1161112403593. The reversal of 1161112403556 is 6553042111611.

1161112403556 is a `hidden beast` number, since 1 + 1 + 61 + 1 + 1 + 2 + 40 + 3 + 556 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1161112403556.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2303794200 + ... + 2303794703.

Almost surely, 2^{1161112403556} is an apocalyptic number.

It is an amenable number.

1161112403556 is an abundant number, since it is smaller than the sum of its proper divisors (2193212318556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1161112403556 is a wasteful number, since it uses less digits than its factorization.

1161112403556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4607588920 (or 4607588915 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The spelling of 1161112403556 in words is "one trillion, one hundred sixty-one billion, one hundred twelve million, four hundred three thousand, five hundred fifty-six".