75586868557 has 2 divisors, whose sum is σ = 75586868558. Its totient is φ = 75586868556.

The previous prime is 75586868527. The next prime is 75586868597.

75586868557 is nontrivially palindromic in base 10.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73589583076 + 1997285481 = 271274^2 + 44691^2 .

It is a palprime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75586868557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75586868527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37793434278 + 37793434279.

It is an arithmetic number, because the mean of its divisors is an integer number (37793434279).

Almost surely, 2^75586868557 is an apocalyptic number.

It is an amenable number.

75586868557 is a deficient number, since it is larger than the sum of its proper divisors (1).

75586868557 is an equidigital number, since it uses as much as digits as its factorization.

75586868557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 564480000, while the sum is 70.

The spelling of 75586868557 in words is "seventy-five billion, five hundred eighty-six million, eight hundred sixty-eight thousand, five hundred fifty-seven".