549951298145 has 4 divisors (see below), whose sum is σ = 659941557780. Its totient is φ = 439961038512.

The previous prime is 549951298133. The next prime is 549951298147. The reversal of 549951298145 is 541892159945.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 541892159945 = 5 ⋅108378431989.

It can be written as a sum of positive squares in 2 ways, for example, as 167899979536 + 382051318609 = 409756^2 + 618103^2 .

It is a cyclic number.

It is not a de Polignac number, because 549951298145 - 2³⁴ = 532771428961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (549951298147) 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, 54995129810 + ... + 54995129819.

It is an arithmetic number, because the mean of its divisors is an integer number (164985389445).

Almost surely, 2^549951298145 is an apocalyptic number.

It is an amenable number.

549951298145 is a deficient number, since it is larger than the sum of its proper divisors (109990259635).

549951298145 is a wasteful number, since it uses less digits than its factorization.

549951298145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109990259634.

The product of its digits is 23328000, while the sum is 62.

The spelling of 549951298145 in words is "five hundred forty-nine billion, nine hundred fifty-one million, two hundred ninety-eight thousand, one hundred forty-five".