20323929867 has 8 divisors (see below), whose sum is σ = 27103887360. Its totient is φ = 13546629480.

The previous prime is 20323929863. The next prime is 20323929881. The reversal of 20323929867 is 76892932302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20323929867 - 2² = 20323929863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20323929863) 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 7 ways as a sum of consecutive naturals, for example, 646359 + ... + 677072.

It is an arithmetic number, because the mean of its divisors is an integer number (3387985920).

Almost surely, 2^20323929867 is an apocalyptic number.

20323929867 is a deficient number, since it is larger than the sum of its proper divisors (6779957493).

20323929867 is a wasteful number, since it uses less digits than its factorization.

20323929867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328553.

The product of its (nonzero) digits is 1959552, while the sum is 51.

The spelling of 20323929867 in words is "twenty billion, three hundred twenty-three million, nine hundred twenty-nine thousand, eight hundred sixty-seven".