42444131412433 has 2 divisors, whose sum is σ = 42444131412434. Its totient is φ = 42444131412432.

The previous prime is 42444131412359. The next prime is 42444131412479. The reversal of 42444131412433 is 33421413144424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38802533972224 + 3641597440209 = 6229168^2 + 1908297^2 .

It is a cyclic number.

It is not a de Polignac number, because 42444131412433 - 2³³ = 42435541477841 is a prime.

It is a super-3 number, since 3×42444131412433³ (a number of 42 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (42444131412493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21222065706216 + 21222065706217.

It is an arithmetic number, because the mean of its divisors is an integer number (21222065706217).

Almost surely, 2^{42444131412433} is an apocalyptic number.

It is an amenable number.

42444131412433 is a deficient number, since it is larger than the sum of its proper divisors (1).

42444131412433 is an equidigital number, since it uses as much as digits as its factorization.

42444131412433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 442368, while the sum is 40.

Adding to 42444131412433 its reverse (33421413144424), we get a palindrome (75865544556857).

The spelling of 42444131412433 in words is "forty-two trillion, four hundred forty-four billion, one hundred thirty-one million, four hundred twelve thousand, four hundred thirty-three".