538631227097 has 2 divisors, whose sum is σ = 538631227098. Its totient is φ = 538631227096.

The previous prime is 538631227087. The next prime is 538631227117. The reversal of 538631227097 is 790722136835.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 395973181696 + 142658045401 = 629264^2 + 377701^2 .

It is a cyclic number.

It is not a de Polignac number, because 538631227097 - 2⁶ = 538631227033 is a prime.

It is not a weakly prime, because it can be changed into another prime (538631227027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269315613548 + 269315613549.

It is an arithmetic number, because the mean of its divisors is an integer number (269315613549).

Almost surely, 2^538631227097 is an apocalyptic number.

It is an amenable number.

538631227097 is a deficient number, since it is larger than the sum of its proper divisors (1).

538631227097 is an equidigital number, since it uses as much as digits as its factorization.

538631227097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3810240, while the sum is 53.

The spelling of 538631227097 in words is "five hundred thirty-eight billion, six hundred thirty-one million, two hundred twenty-seven thousand, ninety-seven".