12054512115 has 24 divisors (see below), whose sum is σ = 20935577520. Its totient is φ = 6416430144.

The previous prime is 12054512111. The next prime is 12054512123. The reversal of 12054512115 is 51121545021.

It is a happy number.

12054512115 is a `hidden beast` number, since 1 + 2 + 0 + 545 + 1 + 2 + 115 = 666.

It is not a de Polignac number, because 12054512115 - 2² = 12054512111 is a prime.

It is a super-2 number, since 2×12054512115² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12054512111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 240237 + ... + 286046.

It is an arithmetic number, because the mean of its divisors is an integer number (872315730).

Almost surely, 2^12054512115 is an apocalyptic number.

12054512115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12054512115 is a deficient number, since it is larger than the sum of its proper divisors (8881065405).

12054512115 is a wasteful number, since it uses less digits than its factorization.

12054512115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526803 (or 526800 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

The spelling of 12054512115 in words is "twelve billion, fifty-four million, five hundred twelve thousand, one hundred fifteen".