64539422706580 has 12 divisors (see below), whose sum is σ = 135532787683860. Its totient is φ = 25815769082624.

The previous prime is 64539422706443. The next prime is 64539422706641. The reversal of 64539422706580 is 8560722493546.

It is a happy number.

64539422706580 is digitally balanced in base 2 and base 5, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 33872260320144 + 30667162386436 = 5819988^2 + 5537794^2 .

It is a super-2 number, since 2×64539422706580² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1613485567645 + ... + 1613485567684.

It is an arithmetic number, because the mean of its divisors is an integer number (11294398973655).

Almost surely, 2^{64539422706580} is an apocalyptic number.

It is an amenable number.

64539422706580 is an abundant number, since it is smaller than the sum of its proper divisors (70993364977280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64539422706580 is a wasteful number, since it uses less digits than its factorization.

64539422706580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3226971135338 (or 3226971135336 counting only the distinct ones).

The product of its (nonzero) digits is 87091200, while the sum is 61.

The spelling of 64539422706580 in words is "sixty-four trillion, five hundred thirty-nine billion, four hundred twenty-two million, seven hundred six thousand, five hundred eighty".