7581443112349 has 2 divisors, whose sum is σ = 7581443112350. Its totient is φ = 7581443112348.

The previous prime is 7581443112323. The next prime is 7581443112359. The reversal of 7581443112349 is 9432113441857.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6406619076900 + 1174824035449 = 2531130^2 + 1083893^2 .

It is a cyclic number.

It is not a de Polignac number, because 7581443112349 - 2²³ = 7581434723741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7581443112296 and 7581443112305.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7581443112359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3790721556174 + 3790721556175.

It is an arithmetic number, because the mean of its divisors is an integer number (3790721556175).

Almost surely, 2^{7581443112349} is an apocalyptic number.

It is an amenable number.

7581443112349 is a deficient number, since it is larger than the sum of its proper divisors (1).

7581443112349 is an equidigital number, since it uses as much as digits as its factorization.

7581443112349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 52.

The spelling of 7581443112349 in words is "seven trillion, five hundred eighty-one billion, four hundred forty-three million, one hundred twelve thousand, three hundred forty-nine".