144454447997 has 2 divisors, whose sum is σ = 144454447998. Its totient is φ = 144454447996.

The previous prime is 144454447967. The next prime is 144454448003. The reversal of 144454447997 is 799744454441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138528373636 + 5926074361 = 372194^2 + 76981^2 .

It is a cyclic number.

It is not a de Polignac number, because 144454447997 - 2⁸ = 144454447741 is a prime.

It is a super-2 number, since 2×144454447997² (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 (144454447967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72227223998 + 72227223999.

It is an arithmetic number, because the mean of its divisors is an integer number (72227223999).

Almost surely, 2^144454447997 is an apocalyptic number.

It is an amenable number.

144454447997 is a deficient number, since it is larger than the sum of its proper divisors (1).

144454447997 is an equidigital number, since it uses as much as digits as its factorization.

144454447997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81285120, while the sum is 62.

The spelling of 144454447997 in words is "one hundred forty-four billion, four hundred fifty-four million, four hundred forty-seven thousand, nine hundred ninety-seven".