64571242248 has 36 divisors (see below), whose sum is σ = 174886287615. Its totient is φ = 21523028688.

The previous prime is 64571242231. The next prime is 64571242249. The reversal of 64571242248 is 84224217546.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 32285621124 + 32285621124 = 179682^2 + 179682^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=179682.

It is not an unprimeable number, because it can be changed into a prime (64571242249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2141211 + ... + 2171157.

Almost surely, 2^64571242248 is an apocalyptic number.

It is an amenable number.

64571242248 is an abundant number, since it is smaller than the sum of its proper divisors (110315045367).

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

64571242248 is an frugal number, since it uses more digits than its factorization.

64571242248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59906 (or 29952 counting only the distinct ones).

The product of its digits is 860160, while the sum is 45.

The spelling of 64571242248 in words is "sixty-four billion, five hundred seventy-one million, two hundred forty-two thousand, two hundred forty-eight".