64655455455646 has 64 divisors (see below), whose sum is σ = 108154206720000. Its totient is φ = 28736061297120.

The previous prime is 64655455455641. The next prime is 64655455455649.

64655455455646 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 (64655455455641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6638813845 + ... + 6638823583.

It is an arithmetic number, because the mean of its divisors is an integer number (1689909480000).

Almost surely, 2^{64655455455646} is an apocalyptic number.

64655455455646 is a deficient number, since it is larger than the sum of its proper divisors (43498751264354).

64655455455646 is a wasteful number, since it uses less digits than its factorization.

64655455455646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15277.

The product of its digits is 5184000000, while the sum is 70.

The spelling of 64655455455646 in words is "sixty-four trillion, six hundred fifty-five billion, four hundred fifty-five million, four hundred fifty-five thousand, six hundred forty-six".