11128999055 has 8 divisors (see below), whose sum is σ = 13401990672. Its totient is φ = 8871738048.

The previous prime is 11128999043. The next prime is 11128999069. The reversal of 11128999055 is 55099982111.

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

It is a cyclic number.

It is not a de Polignac number, because 11128999055 - 2²⁰ = 11127950479 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11128998994 and 11128999012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3931094 + ... + 3933923.

It is an arithmetic number, because the mean of its divisors is an integer number (1675248834).

Almost surely, 2^11128999055 is an apocalyptic number.

11128999055 is a deficient number, since it is larger than the sum of its proper divisors (2272991617).

11128999055 is an equidigital number, since it uses as much as digits as its factorization.

11128999055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7865305.

The product of its (nonzero) digits is 291600, while the sum is 50.

The spelling of 11128999055 in words is "eleven billion, one hundred twenty-eight million, nine hundred ninety-nine thousand, fifty-five".