64323461563 has 12 divisors (see below), whose sum is σ = 66482700480. Its totient is φ = 62232259440.

The previous prime is 64323461551. The next prime is 64323461569. The reversal of 64323461563 is 36516432346.

It is not a de Polignac number, because 64323461563 - 2¹³ = 64323453371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64323461569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5442006 + ... + 5453812.

It is an arithmetic number, because the mean of its divisors is an integer number (5540225040).

Almost surely, 2^64323461563 is an apocalyptic number.

64323461563 is a deficient number, since it is larger than the sum of its proper divisors (2159238917).

64323461563 is a wasteful number, since it uses less digits than its factorization.

64323461563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17538 (or 17507 counting only the distinct ones).

The product of its digits is 933120, while the sum is 43.

The spelling of 64323461563 in words is "sixty-four billion, three hundred twenty-three million, four hundred sixty-one thousand, five hundred sixty-three".