551051011100 has 18 divisors (see below), whose sum is σ = 1195780694304. Its totient is φ = 220420404400.

The previous prime is 551051011039. The next prime is 551051011111. The reversal of 551051011100 is 1110150155.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2755254956 + ... + 2755255155.

Almost surely, 2^551051011100 is an apocalyptic number.

551051011100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

551051011100 is an abundant number, since it is smaller than the sum of its proper divisors (644729683204).

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

551051011100 is a wasteful number, since it uses less digits than its factorization.

551051011100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5510510125 (or 5510510118 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 20.

Adding to 551051011100 its reverse (1110150155), we get a palindrome (552161161255).

The spelling of 551051011100 in words is "five hundred fifty-one billion, fifty-one million, eleven thousand, one hundred".