20512234663264 has 24 divisors (see below), whose sum is σ = 40650902148528. Its totient is φ = 10188196022400.

The previous prime is 20512234663231. The next prime is 20512234663313. The reversal of 20512234663264 is 46236643221502.

It is a super-2 number, since 2×20512234663264² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2122536007 + ... + 2122545670.

It is an arithmetic number, because the mean of its divisors is an integer number (1693787589522).

Almost surely, 2^{20512234663264} is an apocalyptic number.

It is an amenable number.

20512234663264 is a deficient number, since it is larger than the sum of its proper divisors (20138667485264).

20512234663264 is a wasteful number, since it uses less digits than its factorization.

20512234663264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4245081838 (or 4245081830 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 46.

Adding to 20512234663264 its reverse (46236643221502), we get a palindrome (66748877884766).

The spelling of 20512234663264 in words is "twenty trillion, five hundred twelve billion, two hundred thirty-four million, six hundred sixty-three thousand, two hundred sixty-four".