16442667642697 has 8 divisors (see below), whose sum is σ = 16923123986112. Its totient is φ = 15969124340400.

The previous prime is 16442667642683. The next prime is 16442667642767. The reversal of 16442667642697 is 79624676624461.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16442667642697 is a prime.

It is a super-3 number, since 3×16442667642697³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16442667642617) 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, 1728255454 + ... + 1728264967.

It is an arithmetic number, because the mean of its divisors is an integer number (2115390498264).

Almost surely, 2^{16442667642697} is an apocalyptic number.

It is an amenable number.

16442667642697 is a deficient number, since it is larger than the sum of its proper divisors (480456343415).

16442667642697 is an equidigital number, since it uses as much as digits as its factorization.

16442667642697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3456520559.

The product of its digits is 877879296, while the sum is 70.

The spelling of 16442667642697 in words is "sixteen trillion, four hundred forty-two billion, six hundred sixty-seven million, six hundred forty-two thousand, six hundred ninety-seven".