16991475195 has 32 divisors (see below), whose sum is σ = 27719884800. Its totient is φ = 8885087744.

The previous prime is 16991475167. The next prime is 16991475217. The reversal of 16991475195 is 59157419961.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 16991475195 - 2⁹ = 16991474683 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 313891 + ... + 364019.

It is an arithmetic number, because the mean of its divisors is an integer number (866246400).

Almost surely, 2^16991475195 is an apocalyptic number.

16991475195 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16991475195 is a deficient number, since it is larger than the sum of its proper divisors (10728409605).

16991475195 is a wasteful number, since it uses less digits than its factorization.

16991475195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50579.

The product of its digits is 3061800, while the sum is 57.

The spelling of 16991475195 in words is "sixteen billion, nine hundred ninety-one million, four hundred seventy-five thousand, one hundred ninety-five".