16711783871989 has 8 divisors (see below), whose sum is σ = 17765327317248. Its totient is φ = 15666073464000.

The previous prime is 16711783871987. The next prime is 16711783872031. The reversal of 16711783871989 is 98917838711761.

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

It is a cyclic number.

It is not a de Polignac number, because 16711783871989 - 2¹ = 16711783871987 is a prime.

It is a super-2 number, since 2×16711783871989² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16711783871983) 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, 1958254917 + ... + 1958263450.

It is an arithmetic number, because the mean of its divisors is an integer number (2220665914656).

Almost surely, 2^{16711783871989} is an apocalyptic number.

It is an amenable number.

16711783871989 is a deficient number, since it is larger than the sum of its proper divisors (1053543445259).

16711783871989 is a wasteful number, since it uses less digits than its factorization.

16711783871989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3916518635.

The product of its digits is 256048128, while the sum is 76.

The spelling of 16711783871989 in words is "sixteen trillion, seven hundred eleven billion, seven hundred eighty-three million, eight hundred seventy-one thousand, nine hundred eighty-nine".