166723432231904 has 96 divisors (see below), whose sum is σ = 346132180618560. Its totient is φ = 78893993705472.

The previous prime is 166723432231877. The next prime is 166723432231907. The reversal of 166723432231904 is 409132234327661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166723432231907) 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 15 ways as a sum of consecutive naturals, for example, 266193542 + ... + 266819130.

It is an arithmetic number, because the mean of its divisors is an integer number (3605543548110).

Almost surely, 2^{166723432231904} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166723432231904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173066090309280).

166723432231904 is an abundant number, since it is smaller than the sum of its proper divisors (179408748386656).

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

166723432231904 is a wasteful number, since it uses less digits than its factorization.

166723432231904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629452 (or 629444 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 53.

The spelling of 166723432231904 in words is "one hundred sixty-six trillion, seven hundred twenty-three billion, four hundred thirty-two million, two hundred thirty-one thousand, nine hundred four".