75508994489 has 2 divisors, whose sum is σ = 75508994490. Its totient is φ = 75508994488.

The previous prime is 75508994471. The next prime is 75508994593. The reversal of 75508994489 is 98449980557.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39443946025 + 36065048464 = 198605^2 + 189908^2 .

It is a cyclic number.

It is not a de Polignac number, because 75508994489 - 2²⁰ = 75507945913 is a prime.

It is a super-2 number, since 2×75508994489² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (75508994189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37754497244 + 37754497245.

It is an arithmetic number, because the mean of its divisors is an integer number (37754497245).

Almost surely, 2^75508994489 is an apocalyptic number.

It is an amenable number.

75508994489 is a deficient number, since it is larger than the sum of its proper divisors (1).

75508994489 is an equidigital number, since it uses as much as digits as its factorization.

75508994489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 130636800, while the sum is 68.

The spelling of 75508994489 in words is "seventy-five billion, five hundred eight million, nine hundred ninety-four thousand, four hundred eighty-nine".