64220460567073 has 4 divisors (see below), whose sum is σ = 64281681216900. Its totient is φ = 64159239917248.

The previous prime is 64220460567061. The next prime is 64220460567083. The reversal of 64220460567073 is 37076506402246.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51335605722769 + 12884854844304 = 7164887^2 + 3589548^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64220460567073 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 64220460567073.

It is not an unprimeable number, because it can be changed into a prime (64220460567083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30610323340 + ... + 30610325437.

It is an arithmetic number, because the mean of its divisors is an integer number (16070420304225).

Almost surely, 2^{64220460567073} is an apocalyptic number.

It is an amenable number.

64220460567073 is a deficient number, since it is larger than the sum of its proper divisors (61220649827).

64220460567073 is a wasteful number, since it uses less digits than its factorization.

64220460567073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61220649826.

The product of its (nonzero) digits is 10160640, while the sum is 52.

The spelling of 64220460567073 in words is "sixty-four trillion, two hundred twenty billion, four hundred sixty million, five hundred sixty-seven thousand, seventy-three".