16512172716 has 144 divisors (see below), whose sum is σ = 42778595328. Its totient is φ = 4953312000.

The previous prime is 16512172711. The next prime is 16512172717. The reversal of 16512172716 is 61727121561.

16512172716 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (16512172711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15710391 + ... + 15711441.

Almost surely, 2^16512172716 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16512172716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21389297664).

16512172716 is an abundant number, since it is smaller than the sum of its proper divisors (26266422612).

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

16512172716 is a wasteful number, since it uses less digits than its factorization.

16512172716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272 (or 1257 counting only the distinct ones).

The product of its digits is 35280, while the sum is 39.

The spelling of 16512172716 in words is "sixteen billion, five hundred twelve million, one hundred seventy-two thousand, seven hundred sixteen".