16834202978 has 16 divisors (see below), whose sum is σ = 26931840984. Its totient is φ = 7864151040.

The previous prime is 16834202971. The next prime is 16834202981. The reversal of 16834202978 is 87920243861.

It can be written as a sum of positive squares in 4 ways, for example, as 14855465689 + 1978737289 = 121883^2 + 44483^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16834202971) 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 7 ways as a sum of consecutive naturals, for example, 1802363 + ... + 1811678.

Almost surely, 2^16834202978 is an apocalyptic number.

16834202978 is a deficient number, since it is larger than the sum of its proper divisors (10097638006).

16834202978 is a wasteful number, since it uses less digits than its factorization.

16834202978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3614197.

The product of its (nonzero) digits is 1161216, while the sum is 50.

The spelling of 16834202978 in words is "sixteen billion, eight hundred thirty-four million, two hundred two thousand, nine hundred seventy-eight".