16994473415 has 4 divisors (see below), whose sum is σ = 20393368104. Its totient is φ = 13595578728.

The previous prime is 16994473313. The next prime is 16994473421. The reversal of 16994473415 is 51437449961.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 16994473415 - 2²⁶ = 16927364551 is a prime.

It is a Duffinian number.

It is a congruent 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, 1699447337 + ... + 1699447346.

It is an arithmetic number, because the mean of its divisors is an integer number (5098342026).

Almost surely, 2^16994473415 is an apocalyptic number.

16994473415 is a deficient number, since it is larger than the sum of its proper divisors (3398894689).

16994473415 is an equidigital number, since it uses as much as digits as its factorization.

16994473415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3398894688.

The product of its digits is 3265920, while the sum is 53.

The spelling of 16994473415 in words is "sixteen billion, nine hundred ninety-four million, four hundred seventy-three thousand, four hundred fifteen".