64306016644 has 12 divisors (see below), whose sum is σ = 112764729168. Its totient is φ = 32087522600.

The previous prime is 64306016639. The next prime is 64306016683. The reversal of 64306016644 is 44661060346.

It is a junction number, because it is equal to n+sod(n) for n = 64306016597 and 64306016606.

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, 16369222 + ... + 16373149.

It is an arithmetic number, because the mean of its divisors is an integer number (9397060764).

Almost surely, 2^64306016644 is an apocalyptic number.

It is an amenable number.

64306016644 is a deficient number, since it is larger than the sum of its proper divisors (48458712524).

64306016644 is a wasteful number, since it uses less digits than its factorization.

64306016644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32742866 (or 32742864 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 40.

The spelling of 64306016644 in words is "sixty-four billion, three hundred six million, sixteen thousand, six hundred forty-four".