144330506563621 has 4 divisors (see below), whose sum is σ = 164949150358432. Its totient is φ = 123711862768812.

The previous prime is 144330506563577. The next prime is 144330506563631. The reversal of 144330506563621 is 126365605033441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 144330506563621 - 2¹⁵ = 144330506530853 is a prime.

It is a super-2 number, since 2×144330506563621² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144330506563631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10309321897395 + ... + 10309321897408.

It is an arithmetic number, because the mean of its divisors is an integer number (41237287589608).

Almost surely, 2^{144330506563621} is an apocalyptic number.

It is an amenable number.

144330506563621 is a deficient number, since it is larger than the sum of its proper divisors (20618643794811).

144330506563621 is an equidigital number, since it uses as much as digits as its factorization.

144330506563621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20618643794810.

The product of its (nonzero) digits is 4665600, while the sum is 49.

The spelling of 144330506563621 in words is "one hundred forty-four trillion, three hundred thirty billion, five hundred six million, five hundred sixty-three thousand, six hundred twenty-one".