549405553684 has 18 divisors (see below), whose sum is σ = 1041107270910. Its totient is φ = 253571793696.

The previous prime is 549405553679. The next prime is 549405553703. The reversal of 549405553684 is 486355504945.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 62450010000 + 486955543684 = 249900^2 + 697822^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 406364379 + ... + 406365730.

Almost surely, 2^549405553684 is an apocalyptic number.

It is an amenable number.

549405553684 is a deficient number, since it is larger than the sum of its proper divisors (491701717226).

549405553684 is a wasteful number, since it uses less digits than its factorization.

549405553684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812730139 (or 812730124 counting only the distinct ones).

The product of its (nonzero) digits is 51840000, while the sum is 58.

The spelling of 549405553684 in words is "five hundred forty-nine billion, four hundred five million, five hundred fifty-three thousand, six hundred eighty-four".