20004242524515 has 12 divisors (see below), whose sum is σ = 34674020375904. Its totient is φ = 10668929346384.

The previous prime is 20004242524489. The next prime is 20004242524549. The reversal of 20004242524515 is 51542524240002.

20004242524515 is a `hidden beast` number, since 2 + 0 + 0 + 0 + 42 + 42 + 524 + 51 + 5 = 666.

It is not a de Polignac number, because 20004242524515 - 2⁹ = 20004242524003 is a prime.

It is a super-2 number, since 2×20004242524515² (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 20004242524515.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 222269361339 + ... + 222269361428.

It is an arithmetic number, because the mean of its divisors is an integer number (2889501697992).

Almost surely, 2^{20004242524515} is an apocalyptic number.

20004242524515 is a deficient number, since it is larger than the sum of its proper divisors (14669777851389).

20004242524515 is a wasteful number, since it uses less digits than its factorization.

20004242524515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444538722778 (or 444538722775 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 36.

Adding to 20004242524515 its reverse (51542524240002), we get a palindrome (71546766764517).

The spelling of 20004242524515 in words is "twenty trillion, four billion, two hundred forty-two million, five hundred twenty-four thousand, five hundred fifteen".