166500240554312 has 256 divisors, whose sum is σ = 372223918080000. Its totient is φ = 68323083724800.

The previous prime is 166500240554261. The next prime is 166500240554317. The reversal of 166500240554312 is 213455042005661.

It is not an unprimeable number, because it can be changed into a prime (166500240554317) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 100482944588 + ... + 100482946244.

It is an arithmetic number, because the mean of its divisors is an integer number (1453999680000).

Almost surely, 2^{166500240554312} 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 166500240554312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186111959040000).

166500240554312 is an abundant number, since it is smaller than the sum of its proper divisors (205723677525688).

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

166500240554312 is a wasteful number, since it uses less digits than its factorization.

166500240554312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3140 (or 3136 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 44.

Adding to 166500240554312 its reverse (213455042005661), we get a palindrome (379955282559973).

The spelling of 166500240554312 in words is "one hundred sixty-six trillion, five hundred billion, two hundred forty million, five hundred fifty-four thousand, three hundred twelve".