165051066420000 has 960 divisors, whose sum is σ = 641165316422400. Its totient is φ = 41149900800000.

The previous prime is 165051066419917. The next prime is 165051066420041. The reversal of 165051066420000 is 24660150561.

165051066420000 is a `hidden beast` number, since 1 + 6 + 5 + 0 + 5 + 1 + 0 + 6 + 642 + 0 + 0 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 1386120466 + ... + 1386239534.

It is an arithmetic number, because the mean of its divisors is an integer number (667880537940).

Almost surely, 2^{165051066420000} is an apocalyptic number.

165051066420000 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 165051066420000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (320582658211200).

165051066420000 is an abundant number, since it is smaller than the sum of its proper divisors (476114250002400).

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

165051066420000 is a wasteful number, since it uses less digits than its factorization.

165051066420000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119276 (or 119247 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 165051066420000 in words is "one hundred sixty-five trillion, fifty-one billion, sixty-six million, four hundred twenty thousand".