365538085897 has 2 divisors, whose sum is σ = 365538085898. Its totient is φ = 365538085896.

The previous prime is 365538085877. The next prime is 365538085931. The reversal of 365538085897 is 798580835563.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 232689499641 + 132848586256 = 482379^2 + 364484^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-365538085897 is a prime.

It is not a weakly prime, because it can be changed into another prime (365538085817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 182769042948 + 182769042949.

It is an arithmetic number, because the mean of its divisors is an integer number (182769042949).

Almost surely, 2^365538085897 is an apocalyptic number.

It is an amenable number.

365538085897 is a deficient number, since it is larger than the sum of its proper divisors (1).

365538085897 is an equidigital number, since it uses as much as digits as its factorization.

365538085897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728000, while the sum is 67.

The spelling of 365538085897 in words is "three hundred sixty-five billion, five hundred thirty-eight million, eighty-five thousand, eight hundred ninety-seven".