115640424151321 has 2 divisors, whose sum is σ = 115640424151322. Its totient is φ = 115640424151320.

The previous prime is 115640424151253. The next prime is 115640424151333. The reversal of 115640424151321 is 123151424046511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82154990195721 + 33485433955600 = 9063939^2 + 5786660^2 .

It is a cyclic number.

It is not a de Polignac number, because 115640424151321 - 2⁷ = 115640424151193 is a prime.

It is not a weakly prime, because it can be changed into another prime (115640424151621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57820212075660 + 57820212075661.

It is an arithmetic number, because the mean of its divisors is an integer number (57820212075661).

Almost surely, 2^{115640424151321} is an apocalyptic number.

It is an amenable number.

115640424151321 is a deficient number, since it is larger than the sum of its proper divisors (1).

115640424151321 is an equidigital number, since it uses as much as digits as its factorization.

115640424151321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 115200, while the sum is 40.

Adding to 115640424151321 its reverse (123151424046511), we get a palindrome (238791848197832).

The spelling of 115640424151321 in words is "one hundred fifteen trillion, six hundred forty billion, four hundred twenty-four million, one hundred fifty-one thousand, three hundred twenty-one".