144445521431 has 2 divisors, whose sum is σ = 144445521432. Its totient is φ = 144445521430.

The previous prime is 144445521379. The next prime is 144445521461. The reversal of 144445521431 is 134125544441.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144445521431 is a prime.

It is a super-2 number, since 2×144445521431² (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 (144445521461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72222760715 + 72222760716.

It is an arithmetic number, because the mean of its divisors is an integer number (72222760716).

Almost surely, 2^144445521431 is an apocalyptic number.

144445521431 is a deficient number, since it is larger than the sum of its proper divisors (1).

144445521431 is an equidigital number, since it uses as much as digits as its factorization.

144445521431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 153600, while the sum is 38.

The spelling of 144445521431 in words is "one hundred forty-four billion, four hundred forty-five million, five hundred twenty-one thousand, four hundred thirty-one".