115245403505 has 4 divisors (see below), whose sum is σ = 138294484212. Its totient is φ = 92196322800.

The previous prime is 115245403463. The next prime is 115245403523. The reversal of 115245403505 is 505304542511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 505304542511 = 191 ⋅2645573521.

It can be written as a sum of positive squares in 2 ways, for example, as 21871156321 + 93374247184 = 147889^2 + 305572^2 .

It is not a de Polignac number, because 115245403505 - 2⁸ = 115245403249 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11524540346 + ... + 11524540355.

It is an arithmetic number, because the mean of its divisors is an integer number (34573621053).

Almost surely, 2^115245403505 is an apocalyptic number.

It is an amenable number.

115245403505 is a deficient number, since it is larger than the sum of its proper divisors (23049080707).

115245403505 is an equidigital number, since it uses as much as digits as its factorization.

115245403505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23049080706.

The product of its (nonzero) digits is 60000, while the sum is 35.

The spelling of 115245403505 in words is "one hundred fifteen billion, two hundred forty-five million, four hundred three thousand, five hundred five".