64543484523 has 8 divisors (see below), whose sum is σ = 98351976448. Its totient is φ = 36881991144.

The previous prime is 64543484483. The next prime is 64543484531. The reversal of 64543484523 is 32548434546.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64543484523 - 2¹³ = 64543476331 is a prime.

It is a super-2 number, since 2×64543484523² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64543484543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1536749611 + ... + 1536749652.

It is an arithmetic number, because the mean of its divisors is an integer number (12293997056).

Almost surely, 2^64543484523 is an apocalyptic number.

64543484523 is a deficient number, since it is larger than the sum of its proper divisors (33808491925).

64543484523 is a wasteful number, since it uses less digits than its factorization.

64543484523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3073499273.

The product of its digits is 5529600, while the sum is 48.

The spelling of 64543484523 in words is "sixty-four billion, five hundred forty-three million, four hundred eighty-four thousand, five hundred twenty-three".