75454433445481 has 2 divisors, whose sum is σ = 75454433445482. Its totient is φ = 75454433445480.

The previous prime is 75454433445319. The next prime is 75454433445551. The reversal of 75454433445481 is 18454433445457.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40970995937881 + 34483437507600 = 6400859^2 + 5872260^2 .

It is a cyclic number.

It is not a de Polignac number, because 75454433445481 - 2⁹ = 75454433444969 is a prime.

It is a super-2 number, since 2×75454433445481² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (75454433443481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37727216722740 + 37727216722741.

It is an arithmetic number, because the mean of its divisors is an integer number (37727216722741).

Almost surely, 2^{75454433445481} is an apocalyptic number.

It is an amenable number.

75454433445481 is a deficient number, since it is larger than the sum of its proper divisors (1).

75454433445481 is an equidigital number, since it uses as much as digits as its factorization.

75454433445481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 258048000, while the sum is 61.

The spelling of 75454433445481 in words is "seventy-five trillion, four hundred fifty-four billion, four hundred thirty-three million, four hundred forty-five thousand, four hundred eighty-one".