20324323215 has 48 divisors (see below), whose sum is σ = 40434458688. Its totient is φ = 9251209728.

The previous prime is 20324323193. The next prime is 20324323219. The reversal of 20324323215 is 51232342302.

20324323215 is a `hidden beast` number, since 2 + 0 + 324 + 323 + 2 + 15 = 666.

It is not a de Polignac number, because 20324323215 - 2²³ = 20315934607 is a prime.

It is a super-2 number, since 2×20324323215² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20324323219) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 65064 + ... + 211853.

It is an arithmetic number, because the mean of its divisors is an integer number (842384556).

Almost surely, 2^20324323215 is an apocalyptic number.

20324323215 is a deficient number, since it is larger than the sum of its proper divisors (20110135473).

20324323215 is a wasteful number, since it uses less digits than its factorization.

20324323215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277168 (or 277165 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

Adding to 20324323215 its reverse (51232342302), we get a palindrome (71556665517).

The spelling of 20324323215 in words is "twenty billion, three hundred twenty-four million, three hundred twenty-three thousand, two hundred fifteen".