7485234941581 has 2 divisors, whose sum is σ = 7485234941582. Its totient is φ = 7485234941580.

The previous prime is 7485234941551. The next prime is 7485234941593. The reversal of 7485234941581 is 1851494325847.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6418414504681 + 1066820436900 = 2533459^2 + 1032870^2 .

It is an emirp because it is prime and its reverse (1851494325847) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7485234941581 - 2⁵ = 7485234941549 is a prime.

It is a super-2 number, since 2×7485234941581² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7485234941521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3742617470790 + 3742617470791.

It is an arithmetic number, because the mean of its divisors is an integer number (3742617470791).

Almost surely, 2^{7485234941581} is an apocalyptic number.

It is an amenable number.

7485234941581 is a deficient number, since it is larger than the sum of its proper divisors (1).

7485234941581 is an equidigital number, since it uses as much as digits as its factorization.

7485234941581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38707200, while the sum is 61.

The spelling of 7485234941581 in words is "seven trillion, four hundred eighty-five billion, two hundred thirty-four million, nine hundred forty-one thousand, five hundred eighty-one".