75122712757 has 2 divisors, whose sum is σ = 75122712758. Its totient is φ = 75122712756.

The previous prime is 75122712737. The next prime is 75122712781. The reversal of 75122712757 is 75721722157.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70897582756 + 4225130001 = 266266^2 + 65001^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75122712757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75122712737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37561356378 + 37561356379.

It is an arithmetic number, because the mean of its divisors is an integer number (37561356379).

Almost surely, 2^75122712757 is an apocalyptic number.

It is an amenable number.

75122712757 is a deficient number, since it is larger than the sum of its proper divisors (1).

75122712757 is an equidigital number, since it uses as much as digits as its factorization.

75122712757 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 480200, while the sum is 46.

The spelling of 75122712757 in words is "seventy-five billion, one hundred twenty-two million, seven hundred twelve thousand, seven hundred fifty-seven".