64655455646 has 8 divisors (see below), whose sum is σ = 97003474464. Its totient is φ = 32320964160.

The previous prime is 64655455591. The next prime is 64655455651.

64655455646 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 64655455591 and 64655455600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3369875 + ... + 3389006.

It is an arithmetic number, because the mean of its divisors is an integer number (12125434308).

Almost surely, 2^64655455646 is an apocalyptic number.

64655455646 is a deficient number, since it is larger than the sum of its proper divisors (32348018818).

64655455646 is a wasteful number, since it uses less digits than its factorization.

64655455646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6763666.

The product of its digits is 51840000, while the sum is 56.

The spelling of 64655455646 in words is "sixty-four billion, six hundred fifty-five million, four hundred fifty-five thousand, six hundred forty-six".