166693383449 has 8 divisors (see below), whose sum is σ = 178085627040. Its totient is φ = 155563030656.

The previous prime is 166693383413. The next prime is 166693383457. The reversal of 166693383449 is 944383396661.

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 166693383449 - 2³⁶ = 97973906713 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 166693383391 and 166693383400.

It is not an unprimeable number, because it can be changed into a prime (166693383049) 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, 65471384 + ... + 65473929.

It is an arithmetic number, because the mean of its divisors is an integer number (22260703380).

Almost surely, 2^166693383449 is an apocalyptic number.

166693383449 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

166693383449 is a deficient number, since it is larger than the sum of its proper divisors (11392243591).

166693383449 is a wasteful number, since it uses less digits than its factorization.

166693383449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130945399.

The product of its digits is 60466176, while the sum is 62.

The spelling of 166693383449 in words is "one hundred sixty-six billion, six hundred ninety-three million, three hundred eighty-three thousand, four hundred forty-nine".