75285766058257 has 2 divisors, whose sum is σ = 75285766058258. Its totient is φ = 75285766058256.

The previous prime is 75285766058249. The next prime is 75285766058299. The reversal of 75285766058257 is 75285066758257.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43980890612481 + 31304875445776 = 6631809^2 + 5595076^2 .

It is a cyclic number.

It is not a de Polignac number, because 75285766058257 - 2³ = 75285766058249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 75285766058257.

It is not a weakly prime, because it can be changed into another prime (75285766158257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37642883029128 + 37642883029129.

It is an arithmetic number, because the mean of its divisors is an integer number (37642883029129).

Almost surely, 2^{75285766058257} is an apocalyptic number.

It is an amenable number.

75285766058257 is a deficient number, since it is larger than the sum of its proper divisors (1).

75285766058257 is an equidigital number, since it uses as much as digits as its factorization.

75285766058257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1975680000, while the sum is 73.

The spelling of 75285766058257 in words is "seventy-five trillion, two hundred eighty-five billion, seven hundred sixty-six million, fifty-eight thousand, two hundred fifty-seven".