544251535421 has 8 divisors (see below), whose sum is σ = 593835398688. Its totient is φ = 494685414000.

The previous prime is 544251535411. The next prime is 544251535423. The reversal of 544251535421 is 124535152445.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 544251535421 - 2¹⁴ = 544251519037 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 (544251535423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4371275 + ... + 4494056.

It is an arithmetic number, because the mean of its divisors is an integer number (74229424836).

Almost surely, 2^544251535421 is an apocalyptic number.

It is an amenable number.

544251535421 is a deficient number, since it is larger than the sum of its proper divisors (49583863267).

544251535421 is a wasteful number, since it uses less digits than its factorization.

544251535421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8870923.

The product of its digits is 480000, while the sum is 41.

Adding to 544251535421 its reverse (124535152445), we get a palindrome (668786687866).

The spelling of 544251535421 in words is "five hundred forty-four billion, two hundred fifty-one million, five hundred thirty-five thousand, four hundred twenty-one".