12515899995 has 48 divisors (see below), whose sum is σ = 22731838272. Its totient is φ = 6358302720.

The previous prime is 12515899993. The next prime is 12515900027. The reversal of 12515899995 is 59999851521.

It is a happy number.

12515899995 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12515899995 - 2¹ = 12515899993 is a prime.

It is a super-4 number, since 4×12515899995⁴ (a number of 41 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (12515899993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 224347 + ... + 274523.

It is an arithmetic number, because the mean of its divisors is an integer number (473579964).

Almost surely, 2^12515899995 is an apocalyptic number.

12515899995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12515899995 is a deficient number, since it is larger than the sum of its proper divisors (10215938277).

12515899995 is a wasteful number, since it uses less digits than its factorization.

12515899995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50452 (or 50449 counting only the distinct ones).

The product of its digits is 13122000, while the sum is 63.

The spelling of 12515899995 in words is "twelve billion, five hundred fifteen million, eight hundred ninety-nine thousand, nine hundred ninety-five".