166591619010 has 96 divisors (see below), whose sum is σ = 453134373120. Its totient is φ = 42383493504.

The previous prime is 166591618997. The next prime is 166591619011. The reversal of 166591619010 is 10916195661.

166591619010 is a `hidden beast` number, since 16 + 6 + 5 + 9 + 1 + 619 + 0 + 10 = 666.

166591619010 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (166591619011) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 701787 + ... + 908673.

It is an arithmetic number, because the mean of its divisors is an integer number (4720149720).

Almost surely, 2^166591619010 is an apocalyptic number.

166591619010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 166591619010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226567186560).

166591619010 is an abundant number, since it is smaller than the sum of its proper divisors (286542754110).

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

166591619010 is a wasteful number, since it uses less digits than its factorization.

166591619010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207312 (or 207309 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 45.

The spelling of 166591619010 in words is "one hundred sixty-six billion, five hundred ninety-one million, six hundred nineteen thousand, ten".