16718893632 has 168 divisors, whose sum is σ = 54831691200. Its totient is φ = 4771243008.

The previous prime is 16718893621. The next prime is 16718893651. The reversal of 16718893632 is 23639881761.

It is a tau number, because it is divible by the number of its divisors (168).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4469619 + ... + 4473357.

Almost surely, 2^16718893632 is an apocalyptic number.

16718893632 is a gapful number since it is divisible by the number (12) 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 16718893632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27415845600).

16718893632 is an abundant number, since it is smaller than the sum of its proper divisors (38112797568).

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

16718893632 is a wasteful number, since it uses less digits than its factorization.

16718893632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4873 (or 4860 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The spelling of 16718893632 in words is "sixteen billion, seven hundred eighteen million, eight hundred ninety-three thousand, six hundred thirty-two".