544739455221 has 32 divisors (see below), whose sum is σ = 810018693120. Its totient is φ = 323367249600.

The previous prime is 544739455213. The next prime is 544739455231. The reversal of 544739455221 is 122554937445.

It is not a de Polignac number, because 544739455221 - 2³ = 544739455213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (544739455231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 348391 + ... + 1100388.

It is an arithmetic number, because the mean of its divisors is an integer number (25313084160).

Almost surely, 2^544739455221 is an apocalyptic number.

It is an amenable number.

544739455221 is a deficient number, since it is larger than the sum of its proper divisors (265279237899).

544739455221 is a wasteful number, since it uses less digits than its factorization.

544739455221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1449137.

The product of its digits is 6048000, while the sum is 51.

The spelling of 544739455221 in words is "five hundred forty-four billion, seven hundred thirty-nine million, four hundred fifty-five thousand, two hundred twenty-one".