164351605221266 has 8 divisors (see below), whose sum is σ = 257245990781184. Its totient is φ = 78602941627540.

The previous prime is 164351605221247. The next prime is 164351605221283. The reversal of 164351605221266 is 662122506153461.

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

It is a super-2 number, since 2×164351605221266² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1786430491490 + ... + 1786430491581.

It is an arithmetic number, because the mean of its divisors is an integer number (32155748847648).

Almost surely, 2^{164351605221266} is an apocalyptic number.

164351605221266 is a deficient number, since it is larger than the sum of its proper divisors (92894385559918).

164351605221266 is a wasteful number, since it uses less digits than its factorization.

164351605221266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3572860983096.

The product of its (nonzero) digits is 3110400, while the sum is 50.

The spelling of 164351605221266 in words is "one hundred sixty-four trillion, three hundred fifty-one billion, six hundred five million, two hundred twenty-one thousand, two hundred sixty-six".