166429981480 has 128 divisors (see below), whose sum is σ = 447821383680. Its totient is φ = 54464348160.

The previous prime is 166429981463. The next prime is 166429981513. The reversal of 166429981480 is 84189924661.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 502312 + ... + 764968.

It is an arithmetic number, because the mean of its divisors is an integer number (3498604560).

Almost surely, 2^166429981480 is an apocalyptic number.

166429981480 is a gapful number since it is divisible by the number (10) 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 166429981480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223910691840).

166429981480 is an abundant number, since it is smaller than the sum of its proper divisors (281391402200).

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

166429981480 is a wasteful number, since it uses less digits than its factorization.

166429981480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262779 (or 262775 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 58.

The spelling of 166429981480 in words is "one hundred sixty-six billion, four hundred twenty-nine million, nine hundred eighty-one thousand, four hundred eighty".