64045060561 has 8 divisors (see below), whose sum is σ = 65446300800. Its totient is φ = 62645427888.

The previous prime is 64045060553. The next prime is 64045060631. The reversal of 64045060561 is 16506054046.

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 64045060561 - 2³ = 64045060553 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64045060561.

It is not an unprimeable number, because it can be changed into a prime (64045060501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321166 + ... + 480871.

It is an arithmetic number, because the mean of its divisors is an integer number (8180787600).

Almost surely, 2^64045060561 is an apocalyptic number.

It is an amenable number.

64045060561 is a deficient number, since it is larger than the sum of its proper divisors (1401240239).

64045060561 is a wasteful number, since it uses less digits than its factorization.

64045060561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803783.

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 64045060561 in words is "sixty-four billion, forty-five million, sixty thousand, five hundred sixty-one".