20683097988 has 24 divisors (see below), whose sum is σ = 55154928192. Its totient is φ = 5909456544.

The previous prime is 20683097947. The next prime is 20683098017. The reversal of 20683097988 is 88979038602.

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, 123113595 + ... + 123113762.

It is an arithmetic number, because the mean of its divisors is an integer number (2298122008).

Almost surely, 2^20683097988 is an apocalyptic number.

20683097988 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20683097988 is an abundant number, since it is smaller than the sum of its proper divisors (34471830204).

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

20683097988 is a wasteful number, since it uses less digits than its factorization.

20683097988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246227371 (or 246227369 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 60.

The spelling of 20683097988 in words is "twenty billion, six hundred eighty-three million, ninety-seven thousand, nine hundred eighty-eight".