544552235521 has 16 divisors (see below), whose sum is σ = 640872496000. Its totient is φ = 462476834064.

The previous prime is 544552235509. The next prime is 544552235561. The reversal of 544552235521 is 125532255445.

It is a de Polignac number, because none of the positive numbers 2^k-544552235521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (544552235561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7245255 + ... + 7320028.

It is an arithmetic number, because the mean of its divisors is an integer number (40054531000).

Almost surely, 2^544552235521 is an apocalyptic number.

It is an amenable number.

544552235521 is a deficient number, since it is larger than the sum of its proper divisors (96320260479).

544552235521 is a wasteful number, since it uses less digits than its factorization.

544552235521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14565413 (or 14565399 counting only the distinct ones).

The product of its digits is 1200000, while the sum is 43.

The spelling of 544552235521 in words is "five hundred forty-four billion, five hundred fifty-two million, two hundred thirty-five thousand, five hundred twenty-one".