75717849577 has 2 divisors, whose sum is σ = 75717849578. Its totient is φ = 75717849576.

The previous prime is 75717849553. The next prime is 75717849617. The reversal of 75717849577 is 77594871757.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71901204736 + 3816644841 = 268144^2 + 61779^2 .

It is a cyclic number.

It is not a de Polignac number, because 75717849577 - 2²³ = 75709460969 is a prime.

It is not a weakly prime, because it can be changed into another prime (75717849527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37858924788 + 37858924789.

It is an arithmetic number, because the mean of its divisors is an integer number (37858924789).

Almost surely, 2^75717849577 is an apocalyptic number.

It is an amenable number.

75717849577 is a deficient number, since it is larger than the sum of its proper divisors (1).

75717849577 is an equidigital number, since it uses as much as digits as its factorization.

75717849577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 121010400, while the sum is 67.

The spelling of 75717849577 in words is "seventy-five billion, seven hundred seventeen million, eight hundred forty-nine thousand, five hundred seventy-seven".