64684943045 has 8 divisors (see below), whose sum is σ = 77626254624. Its totient is φ = 51745072464.

The previous prime is 64684943009. The next prime is 64684943047. The reversal of 64684943045 is 54034948646.

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

It is a cyclic number.

It is not a de Polignac number, because 64684943045 - 2¹⁴ = 64684926661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64684943047) 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, 258899 + ... + 443168.

It is an arithmetic number, because the mean of its divisors is an integer number (9703281828).

Almost surely, 2^64684943045 is an apocalyptic number.

It is an amenable number.

64684943045 is a deficient number, since it is larger than the sum of its proper divisors (12941311579).

64684943045 is a wasteful number, since it uses less digits than its factorization.

64684943045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720499.

The product of its (nonzero) digits is 9953280, while the sum is 53.

The spelling of 64684943045 in words is "sixty-four billion, six hundred eighty-four million, nine hundred forty-three thousand, forty-five".