20512134324324 has 144 divisors (see below), whose sum is σ = 52771645774848. Its totient is φ = 6716456423424.

The previous prime is 20512134324281. The next prime is 20512134324337. The reversal of 20512134324324 is 42342343121502.

20512134324324 is a `hidden beast` number, since 2 + 0 + 5 + 1 + 2 + 1 + 3 + 4 + 324 + 324 = 666.

It is a super-2 number, since 2×20512134324324² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 47 ways as a sum of consecutive naturals, for example, 1387541437 + ... + 1387556219.

Almost surely, 2^{20512134324324} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20512134324324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26385822887424).

20512134324324 is an abundant number, since it is smaller than the sum of its proper divisors (32259511450524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20512134324324 is a wasteful number, since it uses less digits than its factorization.

20512134324324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16434 (or 16429 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

Adding to 20512134324324 its reverse (42342343121502), we get a palindrome (62854477445826).

The spelling of 20512134324324 in words is "twenty trillion, five hundred twelve billion, one hundred thirty-four million, three hundred twenty-four thousand, three hundred twenty-four".