20600640066042 has 144 divisors (see below), whose sum is σ = 47569932813312. Its totient is φ = 6441815255040.

The previous prime is 20600640066023. The next prime is 20600640066091. The reversal of 20600640066042 is 24066004600602.

20600640066042 is a `hidden beast` number, since 2 + 0 + 6 + 0 + 0 + 6 + 40 + 0 + 6 + 604 + 2 = 666.

It is a super-3 number, since 3×20600640066042³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 20600640065988 and 20600640066006.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4516691442 + ... + 4516696002.

It is an arithmetic number, because the mean of its divisors is an integer number (330346755648).

Almost surely, 2^{20600640066042} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20600640066042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23784966406656).

20600640066042 is an abundant number, since it is smaller than the sum of its proper divisors (26969292747270).

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

20600640066042 is a wasteful number, since it uses less digits than its factorization.

20600640066042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7253 (or 7233 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

Adding to 20600640066042 its reverse (24066004600602), we get a palindrome (44666644666644).

The spelling of 20600640066042 in words is "twenty trillion, six hundred billion, six hundred forty million, sixty-six thousand, forty-two".