20152240215 has 96 divisors (see below), whose sum is σ = 36583004160. Its totient is φ = 9449932800.

The previous prime is 20152240193. The next prime is 20152240223. The reversal of 20152240215 is 51204225102.

It is not a de Polignac number, because 20152240215 - 2⁸ = 20152239959 is a prime.

It is a super-2 number, since 2×20152240215² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3894580 + ... + 3899750.

It is an arithmetic number, because the mean of its divisors is an integer number (381072960).

Almost surely, 2^20152240215 is an apocalyptic number.

20152240215 is a deficient number, since it is larger than the sum of its proper divisors (16430763945).

20152240215 is a wasteful number, since it uses less digits than its factorization.

20152240215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5273 (or 5256 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

Adding to 20152240215 its reverse (51204225102), we get a palindrome (71356465317).

The spelling of 20152240215 in words is "twenty billion, one hundred fifty-two million, two hundred forty thousand, two hundred fifteen".