75536558249 has 2 divisors, whose sum is σ = 75536558250. Its totient is φ = 75536558248.

The previous prime is 75536558219. The next prime is 75536558263. The reversal of 75536558249 is 94285563557.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46297268224 + 29239290025 = 215168^2 + 170995^2 .

It is a cyclic number.

It is not a de Polignac number, because 75536558249 - 2²⁴ = 75519781033 is a prime.

It is a super-3 number, since 3×75536558249³ (a number of 34 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (75536558219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37768279124 + 37768279125.

It is an arithmetic number, because the mean of its divisors is an integer number (37768279125).

Almost surely, 2^75536558249 is an apocalyptic number.

It is an amenable number.

75536558249 is a deficient number, since it is larger than the sum of its proper divisors (1).

75536558249 is an equidigital number, since it uses as much as digits as its factorization.

75536558249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360000, while the sum is 59.

The spelling of 75536558249 in words is "seventy-five billion, five hundred thirty-six million, five hundred fifty-eight thousand, two hundred forty-nine".