64640446044601 has 8 divisors (see below), whose sum is σ = 74112335017344. Its totient is φ = 55227941956320.

The previous prime is 64640446044599. The next prime is 64640446044607. The reversal of 64640446044601 is 10644064404646.

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

It is not a de Polignac number, because 64640446044601 - 2¹ = 64640446044599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64640446044607) 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, 14846218780 + ... + 14846223133.

It is an arithmetic number, because the mean of its divisors is an integer number (9264041877168).

Almost surely, 2^{64640446044601} is an apocalyptic number.

It is an amenable number.

64640446044601 is a deficient number, since it is larger than the sum of its proper divisors (9471888972743).

64640446044601 is a wasteful number, since it uses less digits than its factorization.

64640446044601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29692442231.

The product of its (nonzero) digits is 5308416, while the sum is 49.

The spelling of 64640446044601 in words is "sixty-four trillion, six hundred forty billion, four hundred forty-six million, forty-four thousand, six hundred one".