64516224535523 has 4 divisors (see below), whose sum is σ = 64516285206120. Its totient is φ = 64516163864928.

The previous prime is 64516224535489. The next prime is 64516224535577. The reversal of 64516224535523 is 32553542261546.

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

It is a cyclic number.

It is not a de Polignac number, because 64516224535523 - 2¹⁰ = 64516224534499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64516224538523) 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, 28711238 + ... + 30876651.

It is an arithmetic number, because the mean of its divisors is an integer number (16129071301530).

Almost surely, 2^{64516224535523} is an apocalyptic number.

64516224535523 is a deficient number, since it is larger than the sum of its proper divisors (60670597).

64516224535523 is a wasteful number, since it uses less digits than its factorization.

64516224535523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60670596.

The product of its digits is 25920000, while the sum is 53.

The spelling of 64516224535523 in words is "sixty-four trillion, five hundred sixteen billion, two hundred twenty-four million, five hundred thirty-five thousand, five hundred twenty-three".