164423710257277 has 4 divisors (see below), whose sum is σ = 164655619581340. Its totient is φ = 164191800933216.

The previous prime is 164423710257217. The next prime is 164423710257383. The reversal of 164423710257277 is 772752017324461.

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

It can be written as a sum of positive squares in 2 ways, for example, as 34081438360761 + 130342271896516 = 5837931^2 + 11416754^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164423710257277 is a prime.

It is a super-3 number, since 3×164423710257277³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164423710257217) 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, 115954660968 + ... + 115954662385.

It is an arithmetic number, because the mean of its divisors is an integer number (41163904895335).

Almost surely, 2^{164423710257277} is an apocalyptic number.

It is an amenable number.

164423710257277 is a deficient number, since it is larger than the sum of its proper divisors (231909324063).

164423710257277 is an equidigital number, since it uses as much as digits as its factorization.

164423710257277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231909324062.

The product of its (nonzero) digits is 27659520, while the sum is 58.

The spelling of 164423710257277 in words is "one hundred sixty-four trillion, four hundred twenty-three billion, seven hundred ten million, two hundred fifty-seven thousand, two hundred seventy-seven".