11556162703728 has 40 divisors (see below), whose sum is σ = 33170467021200. Its totient is φ = 3852054234432.

The previous prime is 11556162703727. The next prime is 11556162703739. The reversal of 11556162703728 is 82730726165511.

11556162703728 is a `hidden beast` number, since 1 + 1 + 5 + 5 + 6 + 1 + 627 + 0 + 3 + 7 + 2 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11556162703727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13375187883 + ... + 13375188746.

It is an arithmetic number, because the mean of its divisors is an integer number (829261675530).

Almost surely, 2^{11556162703728} is an apocalyptic number.

11556162703728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11556162703728 is an abundant number, since it is smaller than the sum of its proper divisors (21614304317472).

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

11556162703728 is a wasteful number, since it uses less digits than its factorization.

11556162703728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26750376646 (or 26750376634 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 54.

The spelling of 11556162703728 in words is "eleven trillion, five hundred fifty-six billion, one hundred sixty-two million, seven hundred three thousand, seven hundred twenty-eight".