64642644604 has 6 divisors (see below), whose sum is σ = 113124628064. Its totient is φ = 32321322300.

The previous prime is 64642644587. The next prime is 64642644617. The reversal of 64642644604 is 40644624646.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 8080330572 + ... + 8080330579.

Almost surely, 2^64642644604 is an apocalyptic number.

It is an amenable number.

64642644604 is a deficient number, since it is larger than the sum of its proper divisors (48481983460).

64642644604 is a wasteful number, since it uses less digits than its factorization.

64642644604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16160661155 (or 16160661153 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 46.

The spelling of 64642644604 in words is "sixty-four billion, six hundred forty-two million, six hundred forty-four thousand, six hundred four".