64522555493 has 16 divisors (see below), whose sum is σ = 70702082880. Its totient is φ = 58395859200.

The previous prime is 64522555403. The next prime is 64522555499. The reversal of 64522555493 is 39455522546.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64522555493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64522555499) 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, 2548943 + ... + 2574131.

It is an arithmetic number, because the mean of its divisors is an integer number (4418880180).

Almost surely, 2^64522555493 is an apocalyptic number.

It is an amenable number.

64522555493 is a deficient number, since it is larger than the sum of its proper divisors (6179527387).

64522555493 is a wasteful number, since it uses less digits than its factorization.

64522555493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26228.

The product of its digits is 6480000, while the sum is 50.

The spelling of 64522555493 in words is "sixty-four billion, five hundred twenty-two million, five hundred fifty-five thousand, four hundred ninety-three".