20152042015 has 16 divisors (see below), whose sum is σ = 27881667648. Its totient is φ = 13696252416.

The previous prime is 20152041929. The next prime is 20152042033. The reversal of 20152042015 is 51024025102.

It is not a de Polignac number, because 20152042015 - 2¹⁵ = 20152009247 is a prime.

It is a super-2 number, since 2×20152042015² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2543712 + ... + 2551621.

It is an arithmetic number, because the mean of its divisors is an integer number (1742604228).

Almost surely, 2^20152042015 is an apocalyptic number.

20152042015 is a deficient number, since it is larger than the sum of its proper divisors (7729625633).

20152042015 is a wasteful number, since it uses less digits than its factorization.

20152042015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5095458.

The product of its (nonzero) digits is 800, while the sum is 22.

Adding to 20152042015 its reverse (51024025102), we get a palindrome (71176067117).

The spelling of 20152042015 in words is "twenty billion, one hundred fifty-two million, forty-two thousand, fifteen".