549865405855 has 8 divisors (see below), whose sum is σ = 665034066432. Its totient is φ = 436428605088.

The previous prime is 549865405829. The next prime is 549865405997. The reversal of 549865405855 is 558504568945.

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 549865405855 - 2³⁵ = 515505667487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 432964252 + ... + 432965521.

It is an arithmetic number, because the mean of its divisors is an integer number (83129258304).

Almost surely, 2^549865405855 is an apocalyptic number.

549865405855 is a deficient number, since it is larger than the sum of its proper divisors (115168660577).

549865405855 is a wasteful number, since it uses less digits than its factorization.

549865405855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865929905.

The product of its (nonzero) digits is 172800000, while the sum is 64.

The spelling of 549865405855 in words is "five hundred forty-nine billion, eight hundred sixty-five million, four hundred five thousand, eight hundred fifty-five".