16897860720 has 120 divisors (see below), whose sum is σ = 61113963456. Its totient is φ = 4159471104.

The previous prime is 16897860703. The next prime is 16897860751. The reversal of 16897860720 is 2706879861.

16897860720 is a `hidden beast` number, since 1 + 6 + 8 + 9 + 7 + 8 + 607 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

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, 893304 + ... + 912023.

Almost surely, 2^16897860720 is an apocalyptic number.

16897860720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16897860720 is an abundant number, since it is smaller than the sum of its proper divisors (44216102736).

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

16897860720 is a wasteful number, since it uses less digits than its factorization.

16897860720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1805359 (or 1805350 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The spelling of 16897860720 in words is "sixteen billion, eight hundred ninety-seven million, eight hundred sixty thousand, seven hundred twenty".