75516580817 has 2 divisors, whose sum is σ = 75516580818. Its totient is φ = 75516580816.

The previous prime is 75516580807. The next prime is 75516580859. The reversal of 75516580817 is 71808561557.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69444898576 + 6071682241 = 263524^2 + 77921^2 .

It is a cyclic number.

It is not a de Polignac number, because 75516580817 - 2¹² = 75516576721 is a prime.

It is not a weakly prime, because it can be changed into another prime (75516580807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37758290408 + 37758290409.

It is an arithmetic number, because the mean of its divisors is an integer number (37758290409).

Almost surely, 2^75516580817 is an apocalyptic number.

It is an amenable number.

75516580817 is a deficient number, since it is larger than the sum of its proper divisors (1).

75516580817 is an equidigital number, since it uses as much as digits as its factorization.

75516580817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352000, while the sum is 53.

The spelling of 75516580817 in words is "seventy-five billion, five hundred sixteen million, five hundred eighty thousand, eight hundred seventeen".