20068904040 has 64 divisors (see below), whose sum is σ = 60968851200. Its totient is φ = 5283962112.

The previous prime is 20068904003. The next prime is 20068904041. The reversal of 20068904040 is 4040986002.

It is a junction number, because it is equal to n+sod(n) for n = 20068903992 and 20068904010.

It is not an unprimeable number, because it can be changed into a prime (20068904041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1049007 + ... + 1067966.

It is an arithmetic number, because the mean of its divisors is an integer number (952638300).

Almost surely, 2^20068904040 is an apocalyptic number.

20068904040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20068904040 is an abundant number, since it is smaller than the sum of its proper divisors (40899947160).

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

20068904040 is a wasteful number, since it uses less digits than its factorization.

20068904040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2117066 (or 2117062 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The spelling of 20068904040 in words is "twenty billion, sixty-eight million, nine hundred four thousand, forty".