165273396120 has 192 divisors, whose sum is σ = 617055117120. Its totient is φ = 37580931072.

The previous prime is 165273396083. The next prime is 165273396131. The reversal of 165273396120 is 21693372561.

165273396120 is a `hidden beast` number, since 1 + 6 + 5 + 27 + 3 + 3 + 9 + 612 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 316452 + ... + 656268.

It is an arithmetic number, because the mean of its divisors is an integer number (3213828735).

Almost surely, 2^165273396120 is an apocalyptic number.

165273396120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165273396120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308527558560).

165273396120 is an abundant number, since it is smaller than the sum of its proper divisors (451781721000).

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

165273396120 is a wasteful number, since it uses less digits than its factorization.

165273396120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340034 (or 340027 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The spelling of 165273396120 in words is "one hundred sixty-five billion, two hundred seventy-three million, three hundred ninety-six thousand, one hundred twenty".