166723017536 has 112 divisors (see below), whose sum is σ = 350207884800. Its totient is φ = 78638376960.

The previous prime is 166723017529. The next prime is 166723017551. The reversal of 166723017536 is 635710327661.

166723017536 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×166723017536² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16503815 + ... + 16513913.

Almost surely, 2^166723017536 is an apocalyptic number.

166723017536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166723017536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175103942400).

166723017536 is an abundant number, since it is smaller than the sum of its proper divisors (183484867264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166723017536 is a wasteful number, since it uses less digits than its factorization.

166723017536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10352 (or 10342 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 47.

The spelling of 166723017536 in words is "one hundred sixty-six billion, seven hundred twenty-three million, seventeen thousand, five hundred thirty-six".