664600422114271 has 4 divisors (see below), whose sum is σ = 680810188507344. Its totient is φ = 648390655721200.

The previous prime is 664600422114199. The next prime is 664600422114323. The reversal of 664600422114271 is 172411224006466.

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 664600422114271 - 2⁷ = 664600422114143 is a prime.

It is a super-2 number, since 2×664600422114271² (a number of 30 digits) contains 22 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 (664600422114371) 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, 8104883196475 + ... + 8104883196556.

It is an arithmetic number, because the mean of its divisors is an integer number (170202547126836).

Almost surely, 2^{664600422114271} is an apocalyptic number.

664600422114271 is a deficient number, since it is larger than the sum of its proper divisors (16209766393073).

664600422114271 is a wasteful number, since it uses less digits than its factorization.

664600422114271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16209766393072.

The product of its (nonzero) digits is 774144, while the sum is 46.

The spelling of 664600422114271 in words is "six hundred sixty-four trillion, six hundred billion, four hundred twenty-two million, one hundred fourteen thousand, two hundred seventy-one".