55011111000 has 64 divisors (see below), whose sum is σ = 171634675680. Its totient is φ = 14669628800.

The previous prime is 55011110981. The next prime is 55011111007. The reversal of 55011111000 is 11111055.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55011111007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9165519 + ... + 9171518.

Almost surely, 2^55011111000 is an apocalyptic number.

55011111000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55011111000 is an abundant number, since it is smaller than the sum of its proper divisors (116623564680).

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

55011111000 is a wasteful number, since it uses less digits than its factorization.

55011111000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18337061 (or 18337047 counting only the distinct ones).

The product of its (nonzero) digits is 25, while the sum is 15.

Adding to 55011111000 its reverse (11111055), we get a palindrome (55022222055).

Subtracting from 55011111000 its reverse (11111055), we obtain a palindrome (54999999945).

The spelling of 55011111000 in words is "fifty-five billion, eleven million, one hundred eleven thousand".