166293671793544 has 16 divisors (see below), whose sum is σ = 311896484841420. Its totient is φ = 83121275835840.

The previous prime is 166293671793541. The next prime is 166293671793547. The reversal of 166293671793544 is 445397176392661.

It is an interprime number because it is at equal distance from previous prime (166293671793541) and next prime (166293671793547).

It can be written as a sum of positive squares in 2 ways, for example, as 132941776281444 + 33351895512100 = 11530038^2 + 5775110^2 .

It is not an unprimeable number, because it can be changed into a prime (166293671793541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3194979967 + ... + 3195032014.

Almost surely, 2^{166293671793544} is an apocalyptic number.

It is an amenable number.

166293671793544 is a deficient number, since it is larger than the sum of its proper divisors (145602813047876).

166293671793544 is a wasteful number, since it uses less digits than its factorization.

166293671793544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6390015240 (or 6390015236 counting only the distinct ones).

The product of its digits is 1234517760, while the sum is 73.

The spelling of 166293671793544 in words is "one hundred sixty-six trillion, two hundred ninety-three billion, six hundred seventy-one million, seven hundred ninety-three thousand, five hundred forty-four".