166870170040 has 64 divisors (see below), whose sum is σ = 431318151360. Its totient is φ = 56916172800.

The previous prime is 166870170037. The next prime is 166870170067. The reversal of 166870170040 is 40071078661.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 166870169975 and 166870170002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1489911 + ... + 1597990.

It is an arithmetic number, because the mean of its divisors is an integer number (6739346115).

Almost surely, 2^166870170040 is an apocalyptic number.

166870170040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166870170040 is an abundant number, since it is smaller than the sum of its proper divisors (264447981320).

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

166870170040 is a wasteful number, since it uses less digits than its factorization.

166870170040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3088112 (or 3088108 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 40.

The spelling of 166870170040 in words is "one hundred sixty-six billion, eight hundred seventy million, one hundred seventy thousand, forty".