664626101626466 has 16 divisors (see below), whose sum is σ = 1139391733870080. Its totient is φ = 284831582212320.

The previous prime is 664626101626441. The next prime is 664626101626493.

664626101626466 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×664626101626466² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 664626101626399 and 664626101626408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 680797106 + ... + 681772653.

It is an arithmetic number, because the mean of its divisors is an integer number (71211983366880).

Almost surely, 2^{664626101626466} is an apocalyptic number.

664626101626466 is a deficient number, since it is larger than the sum of its proper divisors (474765632243614).

664626101626466 is a wasteful number, since it uses less digits than its factorization.

664626101626466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1362604609.

The product of its (nonzero) digits is 107495424, while the sum is 62.

The spelling of 664626101626466 in words is "six hundred sixty-four trillion, six hundred twenty-six billion, one hundred one million, six hundred twenty-six thousand, four hundred sixty-six".