164155641266 has 16 divisors (see below), whose sum is σ = 258526131840. Its totient is φ = 78064749840.

The previous prime is 164155641263. The next prime is 164155641323. The reversal of 164155641266 is 662146551461.

It is a self number, because there is not a number n which added to its sum of digits gives 164155641266.

It is not an unprimeable number, because it can be changed into a prime (164155641263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21117530 + ... + 21125301.

It is an arithmetic number, because the mean of its divisors is an integer number (16157883240).

Almost surely, 2^164155641266 is an apocalyptic number.

164155641266 is a deficient number, since it is larger than the sum of its proper divisors (94370490574).

164155641266 is a wasteful number, since it uses less digits than its factorization.

164155641266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42242929.

The product of its digits is 1036800, while the sum is 47.

The spelling of 164155641266 in words is "one hundred sixty-four billion, one hundred fifty-five million, six hundred forty-one thousand, two hundred sixty-six".