166929570440 has 16 divisors (see below), whose sum is σ = 375591533580. Its totient is φ = 66771828160.

The previous prime is 166929570391. The next prime is 166929570469. The reversal of 166929570440 is 44075929661.

166929570440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 165191847844 + 1737722596 = 406438^2 + 41686^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2086619591 + ... + 2086619670.

Almost surely, 2^166929570440 is an apocalyptic number.

166929570440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166929570440 is an abundant number, since it is smaller than the sum of its proper divisors (208661963140).

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

166929570440 is a wasteful number, since it uses less digits than its factorization.

166929570440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4173239272 (or 4173239268 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 166929570440 in words is "one hundred sixty-six billion, nine hundred twenty-nine million, five hundred seventy thousand, four hundred forty".