20326686738 has 8 divisors (see below), whose sum is σ = 40653373488. Its totient is φ = 6775562244.

The previous prime is 20326686713. The next prime is 20326686739. The reversal of 20326686738 is 83768662302.

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

20326686738 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (20326686739) 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, 1693890556 + ... + 1693890567.

It is an arithmetic number, because the mean of its divisors is an integer number (5081671686).

Almost surely, 2^20326686738 is an apocalyptic number.

20326686738 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20326686738 is a wasteful number, since it uses less digits than its factorization.

20326686738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3387781128.

The product of its (nonzero) digits is 3483648, while the sum is 51.

The spelling of 20326686738 in words is "twenty billion, three hundred twenty-six million, six hundred eighty-six thousand, seven hundred thirty-eight".