20879327968 has 24 divisors (see below), whose sum is σ = 41118251832. Its totient is φ = 10436597376.

The previous prime is 20879327951. The next prime is 20879327969. The reversal of 20879327968 is 86972397802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20879327969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16846 + ... + 205042.

It is an arithmetic number, because the mean of its divisors is an integer number (1713260493).

Almost surely, 2^20879327968 is an apocalyptic number.

It is an amenable number.

20879327968 is a deficient number, since it is larger than the sum of its proper divisors (20238923864).

20879327968 is a wasteful number, since it uses less digits than its factorization.

20879327968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191674 (or 191666 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 61.

The spelling of 20879327968 in words is "twenty billion, eight hundred seventy-nine million, three hundred twenty-seven thousand, nine hundred sixty-eight".