115015204321 has 2 divisors, whose sum is σ = 115015204322. Its totient is φ = 115015204320.

The previous prime is 115015204319. The next prime is 115015204331. The reversal of 115015204321 is 123402510511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101817789921 + 13197414400 = 319089^2 + 114880^2 .

It is a cyclic number.

It is not a de Polignac number, because 115015204321 - 2¹ = 115015204319 is a prime.

Together with 115015204319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (115015204331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57507602160 + 57507602161.

It is an arithmetic number, because the mean of its divisors is an integer number (57507602161).

Almost surely, 2^115015204321 is an apocalyptic number.

It is an amenable number.

115015204321 is a deficient number, since it is larger than the sum of its proper divisors (1).

115015204321 is an equidigital number, since it uses as much as digits as its factorization.

115015204321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 115015204321 its reverse (123402510511), we get a palindrome (238417714832).

The spelling of 115015204321 in words is "one hundred fifteen billion, fifteen million, two hundred four thousand, three hundred twenty-one".