64240223160561 has 16 divisors (see below), whose sum is σ = 97890009033600. Its totient is φ = 36708644510208.

The previous prime is 64240223160527. The next prime is 64240223160637. The reversal of 64240223160561 is 16506132204246.

It is a happy number.

It is not a de Polignac number, because 64240223160561 - 2⁹ = 64240223160049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64240223160361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15447055 + ... + 19159643.

It is an arithmetic number, because the mean of its divisors is an integer number (6118125564600).

Almost surely, 2^{64240223160561} is an apocalyptic number.

It is an amenable number.

64240223160561 is a deficient number, since it is larger than the sum of its proper divisors (33649785873039).

64240223160561 is a wasteful number, since it uses less digits than its factorization.

64240223160561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4536568.

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 64240223160561 in words is "sixty-four trillion, two hundred forty billion, two hundred twenty-three million, one hundred sixty thousand, five hundred sixty-one".