16990209974 has 8 divisors (see below), whose sum is σ = 25719125520. Its totient is φ = 8417168136.

The previous prime is 16990209937. The next prime is 16990209979. The reversal of 16990209974 is 47990209961.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16990209979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38968154 + ... + 38968589.

It is an arithmetic number, because the mean of its divisors is an integer number (3214890690).

Almost surely, 2^16990209974 is an apocalyptic number.

16990209974 is a deficient number, since it is larger than the sum of its proper divisors (8728915546).

16990209974 is a wasteful number, since it uses less digits than its factorization.

16990209974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77936854.

The product of its (nonzero) digits is 2204496, while the sum is 56.

The spelling of 16990209974 in words is "sixteen billion, nine hundred ninety million, two hundred nine thousand, nine hundred seventy-four".