163750666493 has 8 divisors (see below), whose sum is σ = 168188185440. Its totient is φ = 159313770000.

The previous prime is 163750666487. The next prime is 163750666507. The reversal of 163750666493 is 394666057361.

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-163750666493 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163750666423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 404618 + ... + 700868.

It is an arithmetic number, because the mean of its divisors is an integer number (21023523180).

Almost surely, 2^163750666493 is an apocalyptic number.

It is an amenable number.

163750666493 is a deficient number, since it is larger than the sum of its proper divisors (4437518947).

163750666493 is a wasteful number, since it uses less digits than its factorization.

163750666493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311227.

The product of its (nonzero) digits is 14696640, while the sum is 56.

The spelling of 163750666493 in words is "one hundred sixty-three billion, seven hundred fifty million, six hundred sixty-six thousand, four hundred ninety-three".