12640260115 has 16 divisors (see below), whose sum is σ = 17352649152. Its totient is φ = 8658889344.

The previous prime is 12640260109. The next prime is 12640260151. The reversal of 12640260115 is 51106204621.

It is not a de Polignac number, because 12640260115 - 2¹⁹ = 12639735827 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146224 + ... + 216013.

It is an arithmetic number, because the mean of its divisors is an integer number (1084540572).

Almost surely, 2^12640260115 is an apocalyptic number.

12640260115 is a deficient number, since it is larger than the sum of its proper divisors (4712389037).

12640260115 is an equidigital number, since it uses as much as digits as its factorization.

12640260115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363246.

The product of its (nonzero) digits is 2880, while the sum is 28.

Adding to 12640260115 its reverse (51106204621), we get a palindrome (63746464736).

The spelling of 12640260115 in words is "twelve billion, six hundred forty million, two hundred sixty thousand, one hundred fifteen".