64563236546 has 4 divisors (see below), whose sum is σ = 96844854822. Its totient is φ = 32281618272.

The previous prime is 64563236537. The next prime is 64563236593.

64563236546 is nontrivially palindromic in base 10.

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

It can be written as a sum of positive squares in only one way, i.e., 36208381225 + 28354855321 = 190285^2 + 168389^2 .

It is a junction number, because it is equal to n+sod(n) for n = 64563236494 and 64563236503.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16140809135 + ... + 16140809138.

Almost surely, 2^64563236546 is an apocalyptic number.

64563236546 is a deficient number, since it is larger than the sum of its proper divisors (32281618276).

64563236546 is a wasteful number, since it uses less digits than its factorization.

64563236546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32281618275.

The product of its digits is 9331200, while the sum is 50.

The spelling of 64563236546 in words is "sixty-four billion, five hundred sixty-three million, two hundred thirty-six thousand, five hundred forty-six".