550605205404 has 36 divisors (see below), whose sum is σ = 1391977445040. Its totient is φ = 183512671680.

The previous prime is 550605205369. The next prime is 550605205421. The reversal of 550605205404 is 404502506055.

550605205404 is a `hidden beast` number, since 5 + 5 + 0 + 60 + 52 + 0 + 540 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 632769 + ... + 1225400.

It is an arithmetic number, because the mean of its divisors is an integer number (38666040140).

Almost surely, 2^550605205404 is an apocalyptic number.

It is an amenable number.

550605205404 is an abundant number, since it is smaller than the sum of its proper divisors (841372239636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

550605205404 is a wasteful number, since it uses less digits than its factorization.

550605205404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1866410 (or 1866405 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

The spelling of 550605205404 in words is "five hundred fifty billion, six hundred five million, two hundred five thousand, four hundred four".