16997743658 has 24 divisors (see below), whose sum is σ = 30953881632. Its totient is φ = 6856231104.

The previous prime is 16997743657. The next prime is 16997743663. The reversal of 16997743658 is 85634779961.

It is a super-3 number, since 3×16997743658³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16997743594 and 16997743603.

It is not an unprimeable number, because it can be changed into a prime (16997743657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2096516 + ... + 2104607.

It is an arithmetic number, because the mean of its divisors is an integer number (1289745068).

Almost surely, 2^16997743658 is an apocalyptic number.

16997743658 is a deficient number, since it is larger than the sum of its proper divisors (13956137974).

16997743658 is a wasteful number, since it uses less digits than its factorization.

16997743658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4201166 (or 4201149 counting only the distinct ones).

The product of its digits is 68584320, while the sum is 65.

The spelling of 16997743658 in words is "sixteen billion, nine hundred ninety-seven million, seven hundred forty-three thousand, six hundred fifty-eight".