165321706376 has 16 divisors (see below), whose sum is σ = 309993434640. Its totient is φ = 82656790480.

The previous prime is 165321706373. The next prime is 165321706397. The reversal of 165321706376 is 673607123561.

165321706376 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 165321706376.

It is not an unprimeable number, because it can be changed into a prime (165321706373) 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 3 ways as a sum of consecutive naturals, for example, 331286 + ... + 663621.

It is an arithmetic number, because the mean of its divisors is an integer number (19374589665).

Almost surely, 2^165321706376 is an apocalyptic number.

It is an amenable number.

165321706376 is a deficient number, since it is larger than the sum of its proper divisors (144671728264).

165321706376 is a wasteful number, since it uses less digits than its factorization.

165321706376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015684 (or 1015680 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 47.

The spelling of 165321706376 in words is "one hundred sixty-five billion, three hundred twenty-one million, seven hundred six thousand, three hundred seventy-six".