115242505387 has 2 divisors, whose sum is σ = 115242505388. Its totient is φ = 115242505386.

The previous prime is 115242505271. The next prime is 115242505403. The reversal of 115242505387 is 783505242511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 115242505387 - 2¹¹ = 115242503339 is a prime.

It is not a weakly prime, because it can be changed into another prime (115242505687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57621252693 + 57621252694.

It is an arithmetic number, because the mean of its divisors is an integer number (57621252694).

Almost surely, 2^115242505387 is an apocalyptic number.

115242505387 is a deficient number, since it is larger than the sum of its proper divisors (1).

115242505387 is an equidigital number, since it uses as much as digits as its factorization.

115242505387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336000, while the sum is 43.

Adding to 115242505387 its reverse (783505242511), we get a palindrome (898747747898).

The spelling of 115242505387 in words is "one hundred fifteen billion, two hundred forty-two million, five hundred five thousand, three hundred eighty-seven".