20684332875 has 48 divisors (see below), whose sum is σ = 34806608928. Its totient is φ = 10907640000.

The previous prime is 20684332873. The next prime is 20684332897. The reversal of 20684332875 is 57823348602.

It is a happy number.

It is not a de Polignac number, because 20684332875 - 2¹ = 20684332873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20684332873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 27989256 + ... + 27989994.

It is an arithmetic number, because the mean of its divisors is an integer number (725137686).

Almost surely, 2^20684332875 is an apocalyptic number.

20684332875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20684332875 is a deficient number, since it is larger than the sum of its proper divisors (14122276053).

20684332875 is an frugal number, since it uses more digits than its factorization.

20684332875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1597 (or 848 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 48.

The spelling of 20684332875 in words is "twenty billion, six hundred eighty-four million, three hundred thirty-two thousand, eight hundred seventy-five".