108609621139 has 4 divisors (see below), whose sum is σ = 108622888960. Its totient is φ = 108596353320.

The previous prime is 108609621137. The next prime is 108609621161. The reversal of 108609621139 is 931126906801.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 108609621139 - 2¹ = 108609621137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108609621137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6621624 + ... + 6638005.

It is an arithmetic number, because the mean of its divisors is an integer number (27155722240).

Almost surely, 2^108609621139 is an apocalyptic number.

108609621139 is a deficient number, since it is larger than the sum of its proper divisors (13267821).

108609621139 is an equidigital number, since it uses as much as digits as its factorization.

108609621139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13267820.

The product of its (nonzero) digits is 139968, while the sum is 46.

The spelling of 108609621139 in words is "one hundred eight billion, six hundred nine million, six hundred twenty-one thousand, one hundred thirty-nine".