16929381985 has 16 divisors (see below), whose sum is σ = 20470806720. Its totient is φ = 13439897280.

The previous prime is 16929381977. The next prime is 16929382003. The reversal of 16929381985 is 58918392961.

It is not a de Polignac number, because 16929381985 - 2³ = 16929381977 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2055175 + ... + 2063395.

It is an arithmetic number, because the mean of its divisors is an integer number (1279425420).

Almost surely, 2^16929381985 is an apocalyptic number.

It is an amenable number.

16929381985 is a deficient number, since it is larger than the sum of its proper divisors (3541424735).

16929381985 is a wasteful number, since it uses less digits than its factorization.

16929381985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11328.

The product of its digits is 8398080, while the sum is 61.

The spelling of 16929381985 in words is "sixteen billion, nine hundred twenty-nine million, three hundred eighty-one thousand, nine hundred eighty-five".