551166565607 has 16 divisors (see below), whose sum is σ = 633734879232. Its totient is φ = 469558697760.

The previous prime is 551166565549. The next prime is 551166565613. The reversal of 551166565607 is 706565661155.

It is a cyclic number.

It is not a de Polignac number, because 551166565607 - 2²⁴ = 551149788391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551166565667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2190428 + ... + 2429054.

It is an arithmetic number, because the mean of its divisors is an integer number (39608429952).

Almost surely, 2^551166565607 is an apocalyptic number.

551166565607 is a deficient number, since it is larger than the sum of its proper divisors (82568313625).

551166565607 is a wasteful number, since it uses less digits than its factorization.

551166565607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240638.

The product of its (nonzero) digits is 5670000, while the sum is 53.

The spelling of 551166565607 in words is "five hundred fifty-one billion, one hundred sixty-six million, five hundred sixty-five thousand, six hundred seven".