165670720210 has 64 divisors (see below), whose sum is σ = 317465930880. Its totient is φ = 62071488000.

The previous prime is 165670720181. The next prime is 165670720213. The reversal of 165670720210 is 12027076561.

165670720210 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 165670720210.

It is not an unprimeable number, because it can be changed into a prime (165670720213) 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 31 ways as a sum of consecutive naturals, for example, 6520852 + ... + 6546208.

It is an arithmetic number, because the mean of its divisors is an integer number (4960405170).

Almost surely, 2^165670720210 is an apocalyptic number.

165670720210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165670720210 is a deficient number, since it is larger than the sum of its proper divisors (151795210670).

165670720210 is a wasteful number, since it uses less digits than its factorization.

165670720210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25771.

The product of its (nonzero) digits is 35280, while the sum is 37.

Adding to 165670720210 its reverse (12027076561), we get a palindrome (177697796771).

The spelling of 165670720210 in words is "one hundred sixty-five billion, six hundred seventy million, seven hundred twenty thousand, two hundred ten".