551051100208 has 40 divisors (see below), whose sum is σ = 1225247645600. Its totient is φ = 235184808960.

The previous prime is 551051100191. The next prime is 551051100209. The reversal of 551051100208 is 802001150155.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (551051100209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10180683 + ... + 10234666.

It is an arithmetic number, because the mean of its divisors is an integer number (30631191140).

Almost surely, 2^551051100208 is an apocalyptic number.

It is an amenable number.

551051100208 is an abundant number, since it is smaller than the sum of its proper divisors (674196545392).

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

551051100208 is a wasteful number, since it uses less digits than its factorization.

551051100208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20415605 (or 20415599 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 28.

The spelling of 551051100208 in words is "five hundred fifty-one billion, fifty-one million, one hundred thousand, two hundred eight".