664462263839 has 16 divisors (see below), whose sum is σ = 742595696640. Its totient is φ = 589285368000.

The previous prime is 664462263733. The next prime is 664462263851. The reversal of 664462263839 is 938362264466.

It is a cyclic number.

It is not a de Polignac number, because 664462263839 - 2³² = 660167296543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664462263139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8707352 + ... + 8783330.

It is an arithmetic number, because the mean of its divisors is an integer number (46412231040).

Almost surely, 2^664462263839 is an apocalyptic number.

664462263839 is a deficient number, since it is larger than the sum of its proper divisors (78133432801).

664462263839 is a wasteful number, since it uses less digits than its factorization.

664462263839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95422.

The product of its digits is 53747712, while the sum is 59.

The spelling of 664462263839 in words is "six hundred sixty-four billion, four hundred sixty-two million, two hundred sixty-three thousand, eight hundred thirty-nine".