285618365497 has 2 divisors, whose sum is σ = 285618365498. Its totient is φ = 285618365496.

The previous prime is 285618365411. The next prime is 285618365519. The reversal of 285618365497 is 794563816582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 221408832681 + 64209532816 = 470541^2 + 253396^2 .

It is a cyclic number.

It is not a de Polignac number, because 285618365497 - 2¹⁵ = 285618332729 is a prime.

It is not a weakly prime, because it can be changed into another prime (285618360497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142809182748 + 142809182749.

It is an arithmetic number, because the mean of its divisors is an integer number (142809182749).

Almost surely, 2^285618365497 is an apocalyptic number.

It is an amenable number.

285618365497 is a deficient number, since it is larger than the sum of its proper divisors (1).

285618365497 is an equidigital number, since it uses as much as digits as its factorization.

285618365497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 87091200, while the sum is 64.

The spelling of 285618365497 in words is "two hundred eighty-five billion, six hundred eighteen million, three hundred sixty-five thousand, four hundred ninety-seven".