549431747255 has 4 divisors (see below), whose sum is σ = 659318096712. Its totient is φ = 439545397800.

The previous prime is 549431747191. The next prime is 549431747257. The reversal of 549431747255 is 552747134945.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 549431747255 - 2⁶ = 549431747191 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 549431747255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549431747257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54943174721 + ... + 54943174730.

It is an arithmetic number, because the mean of its divisors is an integer number (164829524178).

Almost surely, 2^549431747255 is an apocalyptic number.

549431747255 is a deficient number, since it is larger than the sum of its proper divisors (109886349457).

549431747255 is a wasteful number, since it uses less digits than its factorization.

549431747255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109886349456.

The product of its digits is 21168000, while the sum is 56.

The spelling of 549431747255 in words is "five hundred forty-nine billion, four hundred thirty-one million, seven hundred forty-seven thousand, two hundred fifty-five".