55111011100 has 36 divisors (see below), whose sum is σ = 119911594264. Its totient is φ = 21985289280.

The previous prime is 55111011079. The next prime is 55111011121. The reversal of 55111011100 is 111011155.

It is an interprime number because it is at equal distance from previous prime (55111011079) and next prime (55111011121).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 701454 + ... + 776053.

Almost surely, 2^55111011100 is an apocalyptic number.

55111011100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55111011100 is an abundant number, since it is smaller than the sum of its proper divisors (64800583164).

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

55111011100 is a wasteful number, since it uses less digits than its factorization.

55111011100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1477894 (or 1477887 counting only the distinct ones).

The product of its (nonzero) digits is 25, while the sum is 16.

Adding to 55111011100 its reverse (111011155), we get a palindrome (55222022255).

Subtracting from 55111011100 its reverse (111011155), we obtain a palindrome (54999999945).

The spelling of 55111011100 in words is "fifty-five billion, one hundred eleven million, eleven thousand, one hundred".