11281557655 has 8 divisors (see below), whose sum is σ = 13581401184. Its totient is φ = 8996224800.

The previous prime is 11281557653. The next prime is 11281557659. The reversal of 11281557655 is 55675518211.

11281557655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11281557655 - 2¹ = 11281557653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11281557653) 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, 3625956 + ... + 3629065.

It is an arithmetic number, because the mean of its divisors is an integer number (1697675148).

Almost surely, 2^11281557655 is an apocalyptic number.

11281557655 is a deficient number, since it is larger than the sum of its proper divisors (2299843529).

11281557655 is an equidigital number, since it uses as much as digits as its factorization.

11281557655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7255337.

The product of its digits is 420000, while the sum is 46.

The spelling of 11281557655 in words is "eleven billion, two hundred eighty-one million, five hundred fifty-seven thousand, six hundred fifty-five".