64424323652523 has 8 divisors (see below), whose sum is σ = 86109120450000. Its totient is φ = 42844537978368.

The previous prime is 64424323652503. The next prime is 64424323652573. The reversal of 64424323652523 is 32525632342446.

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

It is not a de Polignac number, because 64424323652523 - 2³² = 64420028685227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64424323652503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26252779398 + ... + 26252781851.

It is an arithmetic number, because the mean of its divisors is an integer number (10763640056250).

Almost surely, 2^{64424323652523} is an apocalyptic number.

64424323652523 is a deficient number, since it is larger than the sum of its proper divisors (21684796797477).

64424323652523 is a wasteful number, since it uses less digits than its factorization.

64424323652523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52505561661.

The product of its digits is 24883200, while the sum is 51.

Adding to 64424323652523 its reverse (32525632342446), we get a palindrome (96949955994969).

The spelling of 64424323652523 in words is "sixty-four trillion, four hundred twenty-four billion, three hundred twenty-three million, six hundred fifty-two thousand, five hundred twenty-three".