544550642261 has 16 divisors (see below), whose sum is σ = 576510566400. Its totient is φ = 512921631600.

The previous prime is 544550642227. The next prime is 544550642267. The reversal of 544550642261 is 162246055445.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-544550642261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (544550642267) 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, 30025166 + ... + 30043296.

It is an arithmetic number, because the mean of its divisors is an integer number (36031910400).

Almost surely, 2^544550642261 is an apocalyptic number.

It is an amenable number.

544550642261 is a deficient number, since it is larger than the sum of its proper divisors (31959924139).

544550642261 is a wasteful number, since it uses less digits than its factorization.

544550642261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27160.

The product of its (nonzero) digits is 1152000, while the sum is 44.

It can be divided in two parts, 544550 and 642261, that added together give a palindrome (1186811).

The spelling of 544550642261 in words is "five hundred forty-four billion, five hundred fifty million, six hundred forty-two thousand, two hundred sixty-one".