75053531681 has 2 divisors, whose sum is σ = 75053531682. Its totient is φ = 75053531680.

The previous prime is 75053531671. The next prime is 75053531731. The reversal of 75053531681 is 18613535057.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65974491025 + 9079040656 = 256855^2 + 95284^2 .

It is a cyclic number.

It is not a de Polignac number, because 75053531681 - 2¹⁴ = 75053515297 is a prime.

It is a super-2 number, since 2×75053531681² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (75053531671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37526765840 + 37526765841.

It is an arithmetic number, because the mean of its divisors is an integer number (37526765841).

Almost surely, 2^75053531681 is an apocalyptic number.

It is an amenable number.

75053531681 is a deficient number, since it is larger than the sum of its proper divisors (1).

75053531681 is an equidigital number, since it uses as much as digits as its factorization.

75053531681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378000, while the sum is 44.

The spelling of 75053531681 in words is "seventy-five billion, fifty-three million, five hundred thirty-one thousand, six hundred eighty-one".