115520040397 has 2 divisors, whose sum is σ = 115520040398. Its totient is φ = 115520040396.

The previous prime is 115520040379. The next prime is 115520040403. The reversal of 115520040397 is 793040025511.

Together with previous prime (115520040379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85167083556 + 30352956841 = 291834^2 + 174221^2 .

It is a cyclic number.

It is not a de Polignac number, because 115520040397 - 2¹⁹ = 115519516109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115520049397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57760020198 + 57760020199.

It is an arithmetic number, because the mean of its divisors is an integer number (57760020199).

Almost surely, 2^115520040397 is an apocalyptic number.

It is an amenable number.

115520040397 is a deficient number, since it is larger than the sum of its proper divisors (1).

115520040397 is an equidigital number, since it uses as much as digits as its factorization.

115520040397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37800, while the sum is 37.

The spelling of 115520040397 in words is "one hundred fifteen billion, five hundred twenty million, forty thousand, three hundred ninety-seven".