166845027078 has 24 divisors (see below), whose sum is σ = 362083478328. Its totient is φ = 55524867552.

The previous prime is 166845026983. The next prime is 166845027101. The reversal of 166845027078 is 870720548661.

166845027078 is a `hidden beast` number, since 1 + 6 + 68 + 4 + 502 + 7 + 0 + 78 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7500376 + ... + 7522587.

It is an arithmetic number, because the mean of its divisors is an integer number (15086811597).

Almost surely, 2^166845027078 is an apocalyptic number.

166845027078 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

166845027078 is an abundant number, since it is smaller than the sum of its proper divisors (195238451250).

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

166845027078 is a wasteful number, since it uses less digits than its factorization.

166845027078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15023588 (or 15023585 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 54.

The spelling of 166845027078 in words is "one hundred sixty-six billion, eight hundred forty-five million, twenty-seven thousand, seventy-eight".