166006493538420 has 48 divisors (see below), whose sum is σ = 465008136622848. Its totient is φ = 44250307351680.

The previous prime is 166006493538401. The next prime is 166006493538467. The reversal of 166006493538420 is 24835394600661.

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, 565193371 + ... + 565487010.

It is an arithmetic number, because the mean of its divisors is an integer number (9687669512976).

Almost surely, 2^{166006493538420} is an apocalyptic number.

166006493538420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166006493538420 is an abundant number, since it is smaller than the sum of its proper divisors (299001643084428).

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

166006493538420 is a wasteful number, since it uses less digits than its factorization.

166006493538420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130682840 (or 1130682838 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 57.

The spelling of 166006493538420 in words is "one hundred sixty-six trillion, six billion, four hundred ninety-three million, five hundred thirty-eight thousand, four hundred twenty".