107989728581918 has 4 divisors (see below), whose sum is σ = 161984592872880. Its totient is φ = 53994864290958.

The previous prime is 107989728581849. The next prime is 107989728581923. The reversal of 107989728581918 is 819185827989701.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26997432145478 + ... + 26997432145481.

It is an arithmetic number, because the mean of its divisors is an integer number (40496148218220).

Almost surely, 2^{107989728581918} is an apocalyptic number.

107989728581918 is a deficient number, since it is larger than the sum of its proper divisors (53994864290962).

107989728581918 is an equidigital number, since it uses as much as digits as its factorization.

107989728581918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53994864290961.

The product of its (nonzero) digits is 1463132160, while the sum is 83.

The spelling of 107989728581918 in words is "one hundred seven trillion, nine hundred eighty-nine billion, seven hundred twenty-eight million, five hundred eighty-one thousand, nine hundred eighteen".