549904554999 has 24 divisors (see below), whose sum is σ = 798426939024. Its totient is φ = 364704480000.

The previous prime is 549904554959. The next prime is 549904555001. The reversal of 549904554999 is 999455409945.

549904554999 is a `hidden beast` number, since 5 + 4 + 9 + 90 + 45 + 5 + 499 + 9 = 666.

549904554999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 549904554999 - 2¹⁵ = 549904522231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549904554949) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1975549 + ... + 2236649.

It is an arithmetic number, because the mean of its divisors is an integer number (33267789126).

Almost surely, 2^549904554999 is an apocalyptic number.

549904554999 is a deficient number, since it is larger than the sum of its proper divisors (248522384025).

549904554999 is a wasteful number, since it uses less digits than its factorization.

549904554999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262319 (or 262316 counting only the distinct ones).

The product of its (nonzero) digits is 472392000, while the sum is 72.

The spelling of 549904554999 in words is "five hundred forty-nine billion, nine hundred four million, five hundred fifty-four thousand, nine hundred ninety-nine".