164343423212251 has 4 divisors (see below), whose sum is σ = 166658119313904. Its totient is φ = 162028727110600.

The previous prime is 164343423212207. The next prime is 164343423212261. The reversal of 164343423212251 is 152212324343461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 164343423212251 - 2⁷ = 164343423212123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 164343423212198 and 164343423212207.

It is not an unprimeable number, because it can be changed into a prime (164343423212261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1157348050720 + ... + 1157348050861.

It is an arithmetic number, because the mean of its divisors is an integer number (41664529828476).

Almost surely, 2^{164343423212251} is an apocalyptic number.

164343423212251 is a deficient number, since it is larger than the sum of its proper divisors (2314696101653).

164343423212251 is an equidigital number, since it uses as much as digits as its factorization.

164343423212251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2314696101652.

The product of its digits is 829440, while the sum is 43.

The spelling of 164343423212251 in words is "one hundred sixty-four trillion, three hundred forty-three billion, four hundred twenty-three million, two hundred twelve thousand, two hundred fifty-one".