75755945957 has 2 divisors, whose sum is σ = 75755945958. Its totient is φ = 75755945956.

The previous prime is 75755945879. The next prime is 75755945981. The reversal of 75755945957 is 75954955757.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68828047201 + 6927898756 = 262351^2 + 83234^2 .

It is a cyclic number.

It is not a de Polignac number, because 75755945957 - 2⁸ = 75755945701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75755945557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37877972978 + 37877972979.

It is an arithmetic number, because the mean of its divisors is an integer number (37877972979).

Almost surely, 2^75755945957 is an apocalyptic number.

It is an amenable number.

75755945957 is a deficient number, since it is larger than the sum of its proper divisors (1).

75755945957 is an equidigital number, since it uses as much as digits as its factorization.

75755945957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 347287500, while the sum is 68.

The spelling of 75755945957 in words is "seventy-five billion, seven hundred fifty-five million, nine hundred forty-five thousand, nine hundred fifty-seven".