64707545213644 has 24 divisors (see below), whose sum is σ = 118610888014080. Its totient is φ = 30829417298064.

The previous prime is 64707545213603. The next prime is 64707545213651. The reversal of 64707545213644 is 44631254570746.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1337129574 + ... + 1337177965.

It is an arithmetic number, because the mean of its divisors is an integer number (4942120333920).

Almost surely, 2^{64707545213644} is an apocalyptic number.

It is an amenable number.

64707545213644 is a deficient number, since it is larger than the sum of its proper divisors (53903342800436).

64707545213644 is a wasteful number, since it uses less digits than its factorization.

64707545213644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2674307829 (or 2674307827 counting only the distinct ones).

The product of its (nonzero) digits is 67737600, while the sum is 58.

The spelling of 64707545213644 in words is "sixty-four trillion, seven hundred seven billion, five hundred forty-five million, two hundred thirteen thousand, six hundred forty-four".