73869564563 has 4 divisors (see below), whose sum is σ = 73894100808. Its totient is φ = 73845028320.

The previous prime is 73869564533. The next prime is 73869564569. The reversal of 73869564563 is 36546596837.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73869564563 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 73869564496 and 73869564505.

It is not an unprimeable number, because it can be changed into a prime (73869564569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12263606 + ... + 12269627.

It is an arithmetic number, because the mean of its divisors is an integer number (18473525202).

Almost surely, 2^73869564563 is an apocalyptic number.

73869564563 is a deficient number, since it is larger than the sum of its proper divisors (24536245).

73869564563 is a wasteful number, since it uses less digits than its factorization.

73869564563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24536244.

The product of its digits is 97977600, while the sum is 62.

The spelling of 73869564563 in words is "seventy-three billion, eight hundred sixty-nine million, five hundred sixty-four thousand, five hundred sixty-three".