6662173376817 has 288 divisors, whose sum is σ = 12311269361664. Its totient is φ = 3395511705600.

The previous prime is 6662173376797. The next prime is 6662173376933. The reversal of 6662173376817 is 7186733712666.

It is a happy number.

It is not a de Polignac number, because 6662173376817 - 2⁶ = 6662173376753 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (6662173375817) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 4171679463 + ... + 4171681059.

Almost surely, 2^{6662173376817} is an apocalyptic number.

It is an amenable number.

6662173376817 is a deficient number, since it is larger than the sum of its proper divisors (5649095984847).

6662173376817 is a wasteful number, since it uses less digits than its factorization.

6662173376817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1837 (or 1815 counting only the distinct ones).

The product of its digits is 64012032, while the sum is 63.

The spelling of 6662173376817 in words is "six trillion, six hundred sixty-two billion, one hundred seventy-three million, three hundred seventy-six thousand, eight hundred seventeen".