551551561105 has 8 divisors (see below), whose sum is σ = 661977800064. Its totient is φ = 441163964400.

The previous prime is 551551561103. The next prime is 551551561117. The reversal of 551551561105 is 501165155155.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 551551561105 - 2¹ = 551551561103 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551551561103) 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, 9629151 + ... + 9686260.

It is an arithmetic number, because the mean of its divisors is an integer number (82747225008).

Almost surely, 2^551551561105 is an apocalyptic number.

It is an amenable number.

551551561105 is a deficient number, since it is larger than the sum of its proper divisors (110426238959).

551551561105 is a wasteful number, since it uses less digits than its factorization.

551551561105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19321127.

The product of its (nonzero) digits is 93750, while the sum is 40.

The spelling of 551551561105 in words is "five hundred fifty-one billion, five hundred fifty-one million, five hundred sixty-one thousand, one hundred five".