144420454631 has 2 divisors, whose sum is σ = 144420454632. Its totient is φ = 144420454630.

The previous prime is 144420454609. The next prime is 144420454679. The reversal of 144420454631 is 136454024441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 144420454631 - 2⁶ = 144420454567 is a prime.

It is a super-2 number, since 2×144420454631² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144420454601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72210227315 + 72210227316.

It is an arithmetic number, because the mean of its divisors is an integer number (72210227316).

Almost surely, 2^144420454631 is an apocalyptic number.

144420454631 is a deficient number, since it is larger than the sum of its proper divisors (1).

144420454631 is an equidigital number, since it uses as much as digits as its factorization.

144420454631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 184320, while the sum is 38.

The spelling of 144420454631 in words is "one hundred forty-four billion, four hundred twenty million, four hundred fifty-four thousand, six hundred thirty-one".