75452285961809 has 2 divisors, whose sum is σ = 75452285961810. Its totient is φ = 75452285961808.

The previous prime is 75452285961781. The next prime is 75452285961889. The reversal of 75452285961809 is 90816958225457.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72554961126400 + 2897324835409 = 8517920^2 + 1702153^2 .

It is a cyclic number.

It is not a de Polignac number, because 75452285961809 - 2⁴⁴ = 57860099917393 is a prime.

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 (75452285961889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37726142980904 + 37726142980905.

It is an arithmetic number, because the mean of its divisors is an integer number (37726142980905).

Almost surely, 2^{75452285961809} is an apocalyptic number.

It is an amenable number.

75452285961809 is a deficient number, since it is larger than the sum of its proper divisors (1).

75452285961809 is an equidigital number, since it uses as much as digits as its factorization.

75452285961809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456000, while the sum is 71.

The spelling of 75452285961809 in words is "seventy-five trillion, four hundred fifty-two billion, two hundred eighty-five million, nine hundred sixty-one thousand, eight hundred nine".