75885655656809 has 2 divisors, whose sum is σ = 75885655656810. Its totient is φ = 75885655656808.

The previous prime is 75885655656793. The next prime is 75885655656883. The reversal of 75885655656809 is 90865655658857.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63870225853225 + 12015429803584 = 7991885^2 + 3466328^2 .

It is a cyclic number.

It is not a de Polignac number, because 75885655656809 - 2⁴ = 75885655656793 is a prime.

It is not a weakly prime, because it can be changed into another prime (75885625656809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37942827828404 + 37942827828405.

It is an arithmetic number, because the mean of its divisors is an integer number (37942827828405).

Almost surely, 2^{75885655656809} is an apocalyptic number.

It is an amenable number.

75885655656809 is a deficient number, since it is larger than the sum of its proper divisors (1).

75885655656809 is an equidigital number, since it uses as much as digits as its factorization.

75885655656809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21772800000, while the sum is 83.

The spelling of 75885655656809 in words is "seventy-five trillion, eight hundred eighty-five billion, six hundred fifty-five million, six hundred fifty-six thousand, eight hundred nine".