16906344816 has 20 divisors (see below), whose sum is σ = 43674724232. Its totient is φ = 5635448256.

The previous prime is 16906344797. The next prime is 16906344817. The reversal of 16906344816 is 61844360961.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 352215517 = 16906344816 / (1 + 6 + 9 + 0 + 6 + 3 + 4 + 4 + 8 + 1 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16906344817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176107711 + ... + 176107806.

Almost surely, 2^16906344816 is an apocalyptic number.

16906344816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16906344816 is an abundant number, since it is smaller than the sum of its proper divisors (26768379416).

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

16906344816 is a wasteful number, since it uses less digits than its factorization.

16906344816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352215528 (or 352215522 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 48.

The spelling of 16906344816 in words is "sixteen billion, nine hundred six million, three hundred forty-four thousand, eight hundred sixteen".