163926680309 has 4 divisors (see below), whose sum is σ = 187344777504. Its totient is φ = 140508583116.

The previous prime is 163926680261. The next prime is 163926680311. The reversal of 163926680309 is 903086629361.

163926680309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 163926680309 - 2⁸ = 163926680053 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163926680329) 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 3 ways as a sum of consecutive naturals, for example, 11709048587 + ... + 11709048600.

It is an arithmetic number, because the mean of its divisors is an integer number (46836194376).

Almost surely, 2^163926680309 is an apocalyptic number.

It is an amenable number.

163926680309 is a deficient number, since it is larger than the sum of its proper divisors (23418097195).

163926680309 is an equidigital number, since it uses as much as digits as its factorization.

163926680309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23418097194.

The product of its (nonzero) digits is 2519424, while the sum is 53.

The spelling of 163926680309 in words is "one hundred sixty-three billion, nine hundred twenty-six million, six hundred eighty thousand, three hundred nine".