549379973945 has 16 divisors (see below), whose sum is σ = 719426767680. Its totient is φ = 399416606400.

The previous prime is 549379973917. The next prime is 549379973993.

549379973945 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 549379973945 - 2³⁶ = 480660497209 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1488266 + ... + 1820355.

It is an arithmetic number, because the mean of its divisors is an integer number (44964172980).

Almost surely, 2^549379973945 is an apocalyptic number.

549379973945 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

549379973945 is a deficient number, since it is larger than the sum of its proper divisors (170046793735).

549379973945 is a wasteful number, since it uses less digits than its factorization.

549379973945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3311656.

The product of its digits is 1157360400, while the sum is 74.

The spelling of 549379973945 in words is "five hundred forty-nine billion, three hundred seventy-nine million, nine hundred seventy-three thousand, nine hundred forty-five".