20713685368 has 32 divisors (see below), whose sum is σ = 40534486560. Its totient is φ = 9904660480.

The previous prime is 20713685347. The next prime is 20713685381. The reversal of 20713685368 is 86358631702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1697208 + ... + 1709368.

It is an arithmetic number, because the mean of its divisors is an integer number (1266702705).

Almost surely, 2^20713685368 is an apocalyptic number.

It is an amenable number.

20713685368 is a deficient number, since it is larger than the sum of its proper divisors (19820801192).

20713685368 is a wasteful number, since it uses less digits than its factorization.

20713685368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21447 (or 21443 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 20713685368 in words is "twenty billion, seven hundred thirteen million, six hundred eighty-five thousand, three hundred sixty-eight".