16108785915 has 16 divisors (see below), whose sum is σ = 25865138688. Its totient is φ = 8560992096.

The previous prime is 16108785881. The next prime is 16108785919. The reversal of 16108785915 is 51958780161.

It is not a de Polignac number, because 16108785915 - 2¹³ = 16108777723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16108785919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1893139 + ... + 1901628.

It is an arithmetic number, because the mean of its divisors is an integer number (1616571168).

Almost surely, 2^16108785915 is an apocalyptic number.

16108785915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16108785915 is a deficient number, since it is larger than the sum of its proper divisors (9756352773).

16108785915 is a wasteful number, since it uses less digits than its factorization.

16108785915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3795058.

The product of its (nonzero) digits is 604800, while the sum is 51.

The spelling of 16108785915 in words is "sixteen billion, one hundred eight million, seven hundred eighty-five thousand, nine hundred fifteen".