42775750517 has 2 divisors, whose sum is σ = 42775750518. Its totient is φ = 42775750516.

The previous prime is 42775750487. The next prime is 42775750531. The reversal of 42775750517 is 71505757724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42334708516 + 441042001 = 205754^2 + 21001^2 .

It is a cyclic number.

It is not a de Polignac number, because 42775750517 - 2²⁰ = 42774701941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42775750417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21387875258 + 21387875259.

It is an arithmetic number, because the mean of its divisors is an integer number (21387875259).

Almost surely, 2^42775750517 is an apocalyptic number.

It is an amenable number.

42775750517 is a deficient number, since it is larger than the sum of its proper divisors (1).

42775750517 is an equidigital number, since it uses as much as digits as its factorization.

42775750517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2401000, while the sum is 50.

The spelling of 42775750517 in words is "forty-two billion, seven hundred seventy-five million, seven hundred fifty thousand, five hundred seventeen".