664163361467 has 8 divisors (see below), whose sum is σ = 715377917760. Its totient is φ = 614574664200.

The previous prime is 664163361383. The next prime is 664163361473. The reversal of 664163361467 is 764163361466.

664163361467 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-664163361467 is a prime.

It is a super-2 number, since 2×664163361467² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (664163361067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 406463909 + ... + 406465542.

It is an arithmetic number, because the mean of its divisors is an integer number (89422239720).

Almost surely, 2^664163361467 is an apocalyptic number.

664163361467 is a deficient number, since it is larger than the sum of its proper divisors (51214556293).

664163361467 is a wasteful number, since it uses less digits than its factorization.

664163361467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812929513.

The product of its digits is 7838208, while the sum is 53.

Subtracting 664163361467 from its reverse (764163361466), we obtain a palindrome (99999999999).

The spelling of 664163361467 in words is "six hundred sixty-four billion, one hundred sixty-three million, three hundred sixty-one thousand, four hundred sixty-seven".