549243342945 has 128 divisors (see below), whose sum is σ = 1082564352000. Its totient is φ = 261969396480.

The previous prime is 549243342919. The next prime is 549243342959.

It is a happy number.

549243342945 is a `hidden beast` number, since 54 + 9 + 243 + 342 + 9 + 4 + 5 = 666.

549243342945 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 549243342945 - 2⁸ = 549243342689 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 549243342891 and 549243342900.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 82478026 + ... + 82484684.

It is an arithmetic number, because the mean of its divisors is an integer number (8457534000).

Almost surely, 2^549243342945 is an apocalyptic number.

549243342945 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

549243342945 is a deficient number, since it is larger than the sum of its proper divisors (533321009055).

549243342945 is a wasteful number, since it uses less digits than its factorization.

549243342945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7580 (or 7574 counting only the distinct ones).

The product of its digits is 18662400, while the sum is 54.

The spelling of 549243342945 in words is "five hundred forty-nine billion, two hundred forty-three million, three hundred forty-two thousand, nine hundred forty-five".