7534448444381 has 2 divisors, whose sum is σ = 7534448444382. Its totient is φ = 7534448444380.

The previous prime is 7534448444317. The next prime is 7534448444387. The reversal of 7534448444381 is 1834448444357.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4141668641881 + 3392779802500 = 2035109^2 + 1841950^2 .

It is a cyclic number.

It is not a de Polignac number, because 7534448444381 - 2⁶ = 7534448444317 is a prime.

It is a super-2 number, since 2×7534448444381² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7534448444381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7534448444387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3767224222190 + 3767224222191.

It is an arithmetic number, because the mean of its divisors is an integer number (3767224222191).

Almost surely, 2^{7534448444381} is an apocalyptic number.

It is an amenable number.

7534448444381 is a deficient number, since it is larger than the sum of its proper divisors (1).

7534448444381 is an equidigital number, since it uses as much as digits as its factorization.

7534448444381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82575360, while the sum is 59.

The spelling of 7534448444381 in words is "seven trillion, five hundred thirty-four billion, four hundred forty-eight million, four hundred forty-four thousand, three hundred eighty-one".