144420807447677 has 2 divisors, whose sum is σ = 144420807447678. Its totient is φ = 144420807447676.

The previous prime is 144420807447533. The next prime is 144420807447701. The reversal of 144420807447677 is 776744708024441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124867528243396 + 19553279204281 = 11174414^2 + 4421909^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144420807447677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144420807443677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72210403723838 + 72210403723839.

It is an arithmetic number, because the mean of its divisors is an integer number (72210403723839).

Almost surely, 2^{144420807447677} is an apocalyptic number.

It is an amenable number.

144420807447677 is a deficient number, since it is larger than the sum of its proper divisors (1).

144420807447677 is an equidigital number, since it uses as much as digits as its factorization.

144420807447677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 236027904, while the sum is 65.

The spelling of 144420807447677 in words is "one hundred forty-four trillion, four hundred twenty billion, eight hundred seven million, four hundred forty-seven thousand, six hundred seventy-seven".