64648555584646 has 16 divisors (see below), whose sum is σ = 105788875461120. Its totient is φ = 29385615428680.

The previous prime is 64648555584643. The next prime is 64648555584727.

64648555584646 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64648555584643) 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, 2902695 + ... + 11735533.

It is an arithmetic number, because the mean of its divisors is an integer number (6611804716320).

Almost surely, 2^{64648555584646} is an apocalyptic number.

64648555584646 is a deficient number, since it is larger than the sum of its proper divisors (41140319876474).

64648555584646 is a wasteful number, since it uses less digits than its factorization.

64648555584646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9165539.

The product of its digits is 13271040000, while the sum is 76.

The spelling of 64648555584646 in words is "sixty-four trillion, six hundred forty-eight billion, five hundred fifty-five million, five hundred eighty-four thousand, six hundred forty-six".