16716173652 has 36 divisors (see below), whose sum is σ = 42259234836. Its totient is φ = 5571469440.

The previous prime is 16716173651. The next prime is 16716173671. The reversal of 16716173652 is 25637161761.

It can be written as a sum of positive squares in 2 ways, for example, as 1408050576 + 15308123076 = 37524^2 + 123726^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 16716173598 and 16716173607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16716173651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 443448 + ... + 479664.

Almost surely, 2^16716173652 is an apocalyptic number.

16716173652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16716173652 is an abundant number, since it is smaller than the sum of its proper divisors (25543061184).

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

16716173652 is a wasteful number, since it uses less digits than its factorization.

16716173652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49048 (or 49043 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The spelling of 16716173652 in words is "sixteen billion, seven hundred sixteen million, one hundred seventy-three thousand, six hundred fifty-two".