166822521753 has 8 divisors (see below), whose sum is σ = 224030245600. Its totient is φ = 110414906208.

The previous prime is 166822521751. The next prime is 166822521763. The reversal of 166822521753 is 357125228661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 166822521753 - 2¹ = 166822521751 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166822521751) 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, 200026588 + ... + 200027421.

It is an arithmetic number, because the mean of its divisors is an integer number (28003780700).

Almost surely, 2^166822521753 is an apocalyptic number.

It is an amenable number.

166822521753 is a deficient number, since it is larger than the sum of its proper divisors (57207723847).

166822521753 is a wasteful number, since it uses less digits than its factorization.

166822521753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400054151.

The product of its digits is 1209600, while the sum is 48.

The spelling of 166822521753 in words is "one hundred sixty-six billion, eight hundred twenty-two million, five hundred twenty-one thousand, seven hundred fifty-three".