16923666390 has 16 divisors (see below), whose sum is σ = 40616799408. Its totient is φ = 4512977696.

The previous prime is 16923666359. The next prime is 16923666401. The reversal of 16923666390 is 9366632961.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282061077 + ... + 282061136.

It is an arithmetic number, because the mean of its divisors is an integer number (2538549963).

Almost surely, 2^16923666390 is an apocalyptic number.

16923666390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16923666390 is an abundant number, since it is smaller than the sum of its proper divisors (23693133018).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16923666390 is a wasteful number, since it uses less digits than its factorization.

16923666390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564122223.

The product of its (nonzero) digits is 1889568, while the sum is 51.

The spelling of 16923666390 in words is "sixteen billion, nine hundred twenty-three million, six hundred sixty-six thousand, three hundred ninety".