16946857536 has 224 divisors, whose sum is σ = 52224675840. Its totient is φ = 4750147584.

The previous prime is 16946857517. The next prime is 16946857553. The reversal of 16946857536 is 63575864961.

It is a tau number, because it is divible by the number of its divisors (224).

It is a self number, because there is not a number n which added to its sum of digits gives 16946857536.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20491555 + ... + 20492381.

Almost surely, 2^16946857536 is an apocalyptic number.

16946857536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16946857536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26112337920).

16946857536 is an abundant number, since it is smaller than the sum of its proper divisors (35277818304).

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

16946857536 is a wasteful number, since it uses less digits than its factorization.

16946857536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121 (or 1111 counting only the distinct ones).

The product of its digits is 32659200, while the sum is 60.

The spelling of 16946857536 in words is "sixteen billion, nine hundred forty-six million, eight hundred fifty-seven thousand, five hundred thirty-six".