664862426152 has 16 divisors (see below), whose sum is σ = 1259468772660. Its totient is φ = 329004086784.

The previous prime is 664862426119. The next prime is 664862426159. The reversal of 664862426152 is 251624268466.

It can be written as a sum of positive squares in 2 ways, for example, as 658152522756 + 6709903396 = 811266^2 + 81914^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 664862426152.

It is not an unprimeable number, because it can be changed into a prime (664862426159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 428389963 + ... + 428391514.

Almost surely, 2^664862426152 is an apocalyptic number.

It is an amenable number.

664862426152 is a deficient number, since it is larger than the sum of its proper divisors (594606346508).

664862426152 is a wasteful number, since it uses less digits than its factorization.

664862426152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856781580 (or 856781576 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 52.

The spelling of 664862426152 in words is "six hundred sixty-four billion, eight hundred sixty-two million, four hundred twenty-six thousand, one hundred fifty-two".