551665055066 has 8 divisors (see below), whose sum is σ = 833051258100. Its totient is φ = 273981302368.

The previous prime is 551665055059. The next prime is 551665055093. The reversal of 551665055066 is 660550566155.

It can be written as a sum of positive squares in 2 ways, for example, as 513064201225 + 38600853841 = 716285^2 + 196471^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 925612211 + ... + 925612806.

Almost surely, 2^551665055066 is an apocalyptic number.

551665055066 is a deficient number, since it is larger than the sum of its proper divisors (281386203034).

551665055066 is a wasteful number, since it uses less digits than its factorization.

551665055066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851225168.

The product of its (nonzero) digits is 4050000, while the sum is 50.

The spelling of 551665055066 in words is "five hundred fifty-one billion, six hundred sixty-five million, fifty-five thousand, sixty-six".