551665117055 has 8 divisors (see below), whose sum is σ = 712921074432. Its totient is φ = 407383471008.

The previous prime is 551665117049. The next prime is 551665117057. The reversal of 551665117055 is 550711566155.

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

It is a cyclic number.

It is not a de Polignac number, because 551665117055 - 2¹² = 551665112959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551665117057) 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, 4243577759 + ... + 4243577888.

It is an arithmetic number, because the mean of its divisors is an integer number (89115134304).

Almost surely, 2^551665117055 is an apocalyptic number.

551665117055 is a deficient number, since it is larger than the sum of its proper divisors (161255957377).

551665117055 is a wasteful number, since it uses less digits than its factorization.

551665117055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8487155665.

The product of its (nonzero) digits is 787500, while the sum is 47.

The spelling of 551665117055 in words is "five hundred fifty-one billion, six hundred sixty-five million, one hundred seventeen thousand, fifty-five".