12015112515268 has 24 divisors (see below), whose sum is σ = 21941480901312. Its totient is φ = 5746137987744.

The previous prime is 12015112515253. The next prime is 12015112515269. The reversal of 12015112515268 is 86251521151021.

It is a happy number.

It is a super-2 number, since 2×12015112515268² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12015112515268.

It is not an unprimeable number, because it can be changed into a prime (12015112515269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75030 + ... + 4902637.

It is an arithmetic number, because the mean of its divisors is an integer number (914228370888).

Almost surely, 2^{12015112515268} is an apocalyptic number.

It is an amenable number.

12015112515268 is a deficient number, since it is larger than the sum of its proper divisors (9926368386044).

12015112515268 is a wasteful number, since it uses less digits than its factorization.

12015112515268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5003931 (or 5003929 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 40.

Adding to 12015112515268 its reverse (86251521151021), we get a palindrome (98266633666289).

The spelling of 12015112515268 in words is "twelve trillion, fifteen billion, one hundred twelve million, five hundred fifteen thousand, two hundred sixty-eight".