165420326352 has 40 divisors (see below), whose sum is σ = 427499959680. Its totient is φ = 55118932480.

The previous prime is 165420326287. The next prime is 165420326359. The reversal of 165420326352 is 253623024561.

165420326352 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 165420326352.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165420326359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 535224 + ... + 785687.

It is an arithmetic number, because the mean of its divisors is an integer number (10687498992).

Almost surely, 2^165420326352 is an apocalyptic number.

165420326352 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

165420326352 is an abundant number, since it is smaller than the sum of its proper divisors (262079633328).

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

165420326352 is a wasteful number, since it uses less digits than its factorization.

165420326352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323531 (or 1323525 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 39.

The spelling of 165420326352 in words is "one hundred sixty-five billion, four hundred twenty million, three hundred twenty-six thousand, three hundred fifty-two".