164122512889 has 8 divisors (see below), whose sum is σ = 164382510600. Its totient is φ = 163862714496.

The previous prime is 164122512881. The next prime is 164122512907. The reversal of 164122512889 is 988215221461.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 28022760000 + 136099752889 = 167400^2 + 368917^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 164122512889 - 2³ = 164122512881 is a prime.

It is a super-2 number, since 2×164122512889² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164122512881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1643539 + ... + 1740535.

It is an arithmetic number, because the mean of its divisors is an integer number (20547813825).

Almost surely, 2^164122512889 is an apocalyptic number.

It is an amenable number.

164122512889 is a deficient number, since it is larger than the sum of its proper divisors (259997711).

164122512889 is a wasteful number, since it uses less digits than its factorization.

164122512889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99659.

The product of its digits is 552960, while the sum is 49.

The spelling of 164122512889 in words is "one hundred sixty-four billion, one hundred twenty-two million, five hundred twelve thousand, eight hundred eighty-nine".