12152540203515 has 24 divisors (see below), whose sum is σ = 21064622916480. Its totient is φ = 6481287114624.

The previous prime is 12152540203459. The next prime is 12152540203519. The reversal of 12152540203515 is 51530204525121.

12152540203515 is a `hidden beast` number, since 1 + 2 + 1 + 52 + 540 + 20 + 35 + 15 = 666.

It is not a de Polignac number, because 12152540203515 - 2⁷ = 12152540203387 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12152540203515.

It is not an unprimeable number, because it can be changed into a prime (12152540203519) 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, 3108054 + ... + 5827956.

It is an arithmetic number, because the mean of its divisors is an integer number (877692621520).

Almost surely, 2^{12152540203515} is an apocalyptic number.

12152540203515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12152540203515 is a deficient number, since it is larger than the sum of its proper divisors (8912082712965).

12152540203515 is a wasteful number, since it uses less digits than its factorization.

12152540203515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2819203 (or 2819200 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

Adding to 12152540203515 its reverse (51530204525121), we get a palindrome (63682744728636).

The spelling of 12152540203515 in words is "twelve trillion, one hundred fifty-two billion, five hundred forty million, two hundred three thousand, five hundred fifteen".