11555044956 has 180 divisors, whose sum is σ = 37842625128. Its totient is φ = 3047429952.

The previous prime is 11555044933. The next prime is 11555044967. The reversal of 11555044956 is 65944055511.

11555044956 is a `hidden beast` number, since 1 + 1 + 5 + 550 + 4 + 4 + 95 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 178395 + ... + 234381.

Almost surely, 2^11555044956 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11555044956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18921312564).

11555044956 is an abundant number, since it is smaller than the sum of its proper divisors (26287580172).

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

11555044956 is a wasteful number, since it uses less digits than its factorization.

11555044956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56030 (or 56012 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 45.

The spelling of 11555044956 in words is "eleven billion, five hundred fifty-five million, forty-four thousand, nine hundred fifty-six".