144454314421 has 8 divisors (see below), whose sum is σ = 152982696600. Its totient is φ = 135929384448.

The previous prime is 144454314409. The next prime is 144454314443. The reversal of 144454314421 is 124413454441.

It can be written as a sum of positive squares in 4 ways, for example, as 33639228100 + 110815086321 = 183410^2 + 332889^2 .

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

It is not a de Polignac number, because 144454314421 - 2³⁷ = 7015360949 is a prime.

It is a super-2 number, since 2×144454314421² (a number of 23 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 (144454314451) 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, 776646 + ... + 944503.

It is an arithmetic number, because the mean of its divisors is an integer number (19122837075).

Almost surely, 2^144454314421 is an apocalyptic number.

It is an amenable number.

144454314421 is a deficient number, since it is larger than the sum of its proper divisors (8528382179).

144454314421 is a wasteful number, since it uses less digits than its factorization.

144454314421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1726103.

The product of its digits is 122880, while the sum is 37.

Adding to 144454314421 its reverse (124413454441), we get a palindrome (268867768862).

The spelling of 144454314421 in words is "one hundred forty-four billion, four hundred fifty-four million, three hundred fourteen thousand, four hundred twenty-one".