16416642642791 has 8 divisors (see below), whose sum is σ = 16504980781824. Its totient is φ = 16328329370080.

The previous prime is 16416642642769. The next prime is 16416642642817. The reversal of 16416642642791 is 19724624661461.

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 16416642642791 - 2⁶ = 16416642642727 is a prime.

It is a super-2 number, since 2×16416642642791² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16416642642791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16416642644791) 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, 4891880 + ... + 7534173.

It is an arithmetic number, because the mean of its divisors is an integer number (2063122597728).

Almost surely, 2^{16416642642791} is an apocalyptic number.

16416642642791 is a deficient number, since it is larger than the sum of its proper divisors (88338139033).

16416642642791 is a wasteful number, since it uses less digits than its factorization.

16416642642791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12433161.

The product of its digits is 20901888, while the sum is 59.

The spelling of 16416642642791 in words is "sixteen trillion, four hundred sixteen billion, six hundred forty-two million, six hundred forty-two thousand, seven hundred ninety-one".