11551554146056 has 8 divisors (see below), whose sum is σ = 21659164023870. Its totient is φ = 5775777073024.

The previous prime is 11551554146051. The next prime is 11551554146063. The reversal of 11551554146056 is 65064145515511.

It can be written as a sum of positive squares in only one way, i.e., 7631019504900 + 3920534641156 = 2762430^2 + 1980034^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (11551554146051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 721972134121 + ... + 721972134136.

Almost surely, 2^{11551554146056} is an apocalyptic number.

It is an amenable number.

11551554146056 is a deficient number, since it is larger than the sum of its proper divisors (10107609877814).

11551554146056 is a wasteful number, since it uses less digits than its factorization.

11551554146056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1443944268263 (or 1443944268259 counting only the distinct ones).

The product of its (nonzero) digits is 1800000, while the sum is 49.

The spelling of 11551554146056 in words is "eleven trillion, five hundred fifty-one billion, five hundred fifty-four million, one hundred forty-six thousand, fifty-six".