166574762784216 has 96 divisors (see below), whose sum is σ = 457572500236800. Its totient is φ = 54733494594240.

The previous prime is 166574762784211. The next prime is 166574762784217. The reversal of 166574762784216 is 612487267475661.

166574762784216 is a `hidden beast` number, since 1 + 6 + 6 + 5 + 74 + 7 + 62 + 78 + 421 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166574762784211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27058675 + ... + 32639261.

It is an arithmetic number, because the mean of its divisors is an integer number (4766380210800).

Almost surely, 2^{166574762784216} 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 166574762784216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228786250118400).

166574762784216 is an abundant number, since it is smaller than the sum of its proper divisors (290997737452584).

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

166574762784216 is a wasteful number, since it uses less digits than its factorization.

166574762784216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5586509 (or 5586502 counting only the distinct ones).

The product of its digits is 1137991680, while the sum is 72.

The spelling of 166574762784216 in words is "one hundred sixty-six trillion, five hundred seventy-four billion, seven hundred sixty-two million, seven hundred eighty-four thousand, two hundred sixteen".