166505155116 has 48 divisors (see below), whose sum is σ = 402472132608. Its totient is φ = 53520163200.

The previous prime is 166505155093. The next prime is 166505155139. The reversal of 166505155116 is 611551505661.

It is an interprime number because it is at equal distance from previous prime (166505155093) and next prime (166505155139).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 691900 + ... + 900963.

It is an arithmetic number, because the mean of its divisors is an integer number (8384836096).

Almost surely, 2^166505155116 is an apocalyptic number.

It is an amenable number.

166505155116 is an abundant number, since it is smaller than the sum of its proper divisors (235966977492).

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

166505155116 is a wasteful number, since it uses less digits than its factorization.

166505155116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1593182 (or 1593180 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 42.

The spelling of 166505155116 in words is "one hundred sixty-six billion, five hundred five million, one hundred fifty-five thousand, one hundred sixteen".