11005550001 has 8 divisors (see below), whose sum is σ = 16304518560. Its totient is φ = 7337033316.

The previous prime is 11005549969. The next prime is 11005550051. The reversal of 11005550001 is 10005550011.

11005550001 is a `hidden beast` number, since 110 + 0 + 5 + 550 + 0 + 0 + 1 = 666.

It is not a de Polignac number, because 11005550001 - 2⁵ = 11005549969 is a prime.

It is a super-2 number, since 2×11005550001² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11005550051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203806455 + ... + 203806508.

It is an arithmetic number, because the mean of its divisors is an integer number (2038064820).

Almost surely, 2^11005550001 is an apocalyptic number.

It is an amenable number.

11005550001 is a deficient number, since it is larger than the sum of its proper divisors (5298968559).

11005550001 is an equidigital number, since it uses as much as digits as its factorization.

11005550001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407612972 (or 407612966 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 18.

The spelling of 11005550001 in words is "eleven billion, five million, five hundred fifty thousand, one".