20068520689138 has 8 divisors (see below), whose sum is σ = 30164593727232. Its totient is φ = 10013656113396.

The previous prime is 20068520689117. The next prime is 20068520689163. The reversal of 20068520689138 is 83198602586002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10302114370 + ... + 10302116317.

It is an arithmetic number, because the mean of its divisors is an integer number (3770574215904).

Almost surely, 2^{20068520689138} is an apocalyptic number.

20068520689138 is a deficient number, since it is larger than the sum of its proper divisors (10096073038094).

20068520689138 is a wasteful number, since it uses less digits than its factorization.

20068520689138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20604231176.

The product of its (nonzero) digits is 9953280, while the sum is 58.

The spelling of 20068520689138 in words is "twenty trillion, sixty-eight billion, five hundred twenty million, six hundred eighty-nine thousand, one hundred thirty-eight".