544355421643 has 4 divisors (see below), whose sum is σ = 593842278168. Its totient is φ = 494868565120.

The previous prime is 544355421637. The next prime is 544355421647. The reversal of 544355421643 is 346124553445.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 544355421643 - 2¹⁷ = 544355290571 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 544355421593 and 544355421602.

It is not an unprimeable number, because it can be changed into a prime (544355421647) 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, 24743428246 + ... + 24743428267.

It is an arithmetic number, because the mean of its divisors is an integer number (148460569542).

Almost surely, 2^544355421643 is an apocalyptic number.

544355421643 is a deficient number, since it is larger than the sum of its proper divisors (49486856525).

544355421643 is a wasteful number, since it uses less digits than its factorization.

544355421643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49486856524.

The product of its digits is 3456000, while the sum is 46.

The spelling of 544355421643 in words is "five hundred forty-four billion, three hundred fifty-five million, four hundred twenty-one thousand, six hundred forty-three".