16995680915 has 4 divisors (see below), whose sum is σ = 20394817104. Its totient is φ = 13596544728.

The previous prime is 16995680909. The next prime is 16995680921. The reversal of 16995680915 is 51908659961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51908659961 = 33769 ⋅1537169.

It is an interprime number because it is at equal distance from previous prime (16995680909) and next prime (16995680921).

It is a cyclic number.

It is not a de Polignac number, because 16995680915 - 2⁶ = 16995680851 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1699568087 + ... + 1699568096.

It is an arithmetic number, because the mean of its divisors is an integer number (5098704276).

Almost surely, 2^16995680915 is an apocalyptic number.

16995680915 is a deficient number, since it is larger than the sum of its proper divisors (3399136189).

16995680915 is an equidigital number, since it uses as much as digits as its factorization.

16995680915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3399136188.

The product of its (nonzero) digits is 5248800, while the sum is 59.

The spelling of 16995680915 in words is "sixteen billion, nine hundred ninety-five million, six hundred eighty thousand, nine hundred fifteen".