166074139120 has 40 divisors (see below), whose sum is σ = 389069897040. Its totient is φ = 65922554880.

The previous prime is 166074139093. The next prime is 166074139129. The reversal of 166074139120 is 21931470661.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×166074139120² (a number of 23 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166074139129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7912905 + ... + 7933864.

It is an arithmetic number, because the mean of its divisors is an integer number (9726747426).

Almost surely, 2^166074139120 is an apocalyptic number.

166074139120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166074139120 is an abundant number, since it is smaller than the sum of its proper divisors (222995757920).

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

166074139120 is a wasteful number, since it uses less digits than its factorization.

166074139120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15846913 (or 15846907 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The spelling of 166074139120 in words is "one hundred sixty-six billion, seventy-four million, one hundred thirty-nine thousand, one hundred twenty".