75918659989 has 2 divisors, whose sum is σ = 75918659990. Its totient is φ = 75918659988.

The previous prime is 75918659941. The next prime is 75918660029. The reversal of 75918659989 is 98995681957.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61773125764 + 14145534225 = 248542^2 + 118935^2 .

It is a cyclic number.

It is not a de Polignac number, because 75918659989 - 2¹⁵ = 75918627221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75918659489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37959329994 + 37959329995.

It is an arithmetic number, because the mean of its divisors is an integer number (37959329995).

Almost surely, 2^75918659989 is an apocalyptic number.

It is an amenable number.

75918659989 is a deficient number, since it is larger than the sum of its proper divisors (1).

75918659989 is an equidigital number, since it uses as much as digits as its factorization.

75918659989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 440899200, while the sum is 76.

The spelling of 75918659989 in words is "seventy-five billion, nine hundred eighteen million, six hundred fifty-nine thousand, nine hundred eighty-nine".