165387422372040 has 192 divisors, whose sum is σ = 586381831813440. Its totient is φ = 40093356925440.

The previous prime is 165387422372017. The next prime is 165387422372099. The reversal of 165387422372040 is 40273224783561.

165387422372040 is a `hidden beast` number, since 1 + 6 + 5 + 3 + 8 + 7 + 422 + 3 + 7 + 204 + 0 = 666.

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, 327687319 + ... + 328191641.

It is an arithmetic number, because the mean of its divisors is an integer number (3054072040695).

Almost surely, 2^{165387422372040} is an apocalyptic number.

165387422372040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165387422372040 is an abundant number, since it is smaller than the sum of its proper divisors (420994409441400).

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

165387422372040 is a wasteful number, since it uses less digits than its factorization.

165387422372040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587164 (or 587157 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 54.

The spelling of 165387422372040 in words is "one hundred sixty-five trillion, three hundred eighty-seven billion, four hundred twenty-two million, three hundred seventy-two thousand, forty".