20015015415 has 16 divisors (see below), whose sum is σ = 32035740000. Its totient is φ = 10670769792.

The previous prime is 20015015413. The next prime is 20015015417. The reversal of 20015015415 is 51451051002.

It is an interprime number because it is at equal distance from previous prime (20015015413) and next prime (20015015417).

It is not a de Polignac number, because 20015015415 - 2¹ = 20015015413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20015015413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201460 + ... + 283929.

It is an arithmetic number, because the mean of its divisors is an integer number (2002233750).

Almost surely, 2^20015015415 is an apocalyptic number.

20015015415 is a deficient number, since it is larger than the sum of its proper divisors (12020724585).

20015015415 is a wasteful number, since it uses less digits than its factorization.

20015015415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488146.

The product of its (nonzero) digits is 1000, while the sum is 24.

Adding to 20015015415 its reverse (51451051002), we get a palindrome (71466066417).

The spelling of 20015015415 in words is "twenty billion, fifteen million, fifteen thousand, four hundred fifteen".