16811688047 has 8 divisors (see below), whose sum is σ = 20960026752. Its totient is φ = 13100016600.

The previous prime is 16811688043. The next prime is 16811688067. The reversal of 16811688047 is 74088611861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16811688047 - 2² = 16811688043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16811687986 and 16811688004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16811688041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109166729 + ... + 109166882.

It is an arithmetic number, because the mean of its divisors is an integer number (2620003344).

Almost surely, 2^16811688047 is an apocalyptic number.

16811688047 is a deficient number, since it is larger than the sum of its proper divisors (4148338705).

16811688047 is a wasteful number, since it uses less digits than its factorization.

16811688047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218333629.

The product of its (nonzero) digits is 516096, while the sum is 50.

The spelling of 16811688047 in words is "sixteen billion, eight hundred eleven million, six hundred eighty-eight thousand, forty-seven".