64563027523 has 4 divisors (see below), whose sum is σ = 64639980720. Its totient is φ = 64486074328.

The previous prime is 64563027521. The next prime is 64563027647. The reversal of 64563027523 is 32572036546.

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 64563027523 - 2¹ = 64563027521 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64563027523.

It is not an unprimeable number, because it can be changed into a prime (64563027521) 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, 38475340 + ... + 38477017.

It is an arithmetic number, because the mean of its divisors is an integer number (16159995180).

Almost surely, 2^64563027523 is an apocalyptic number.

64563027523 is a deficient number, since it is larger than the sum of its proper divisors (76953197).

64563027523 is an equidigital number, since it uses as much as digits as its factorization.

64563027523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76953196.

The product of its (nonzero) digits is 907200, while the sum is 43.

The spelling of 64563027523 in words is "sixty-four billion, five hundred sixty-three million, twenty-seven thousand, five hundred twenty-three".