165166550112 has 48 divisors (see below), whose sum is σ = 433640314800. Its totient is φ = 55045596672.

The previous prime is 165166550111. The next prime is 165166550239. The reversal of 165166550112 is 211055661561.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165166550111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390514 + ... + 694862.

It is an arithmetic number, because the mean of its divisors is an integer number (9034173225).

Almost surely, 2^165166550112 is an apocalyptic number.

165166550112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

165166550112 is an abundant number, since it is smaller than the sum of its proper divisors (268473764688).

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

165166550112 is a wasteful number, since it uses less digits than its factorization.

165166550112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310015 (or 310007 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 39.

The spelling of 165166550112 in words is "one hundred sixty-five billion, one hundred sixty-six million, five hundred fifty thousand, one hundred twelve".