64823536013 has 4 divisors (see below), whose sum is σ = 64825068348. Its totient is φ = 64822003680.

The previous prime is 64823536003. The next prime is 64823536027. The reversal of 64823536013 is 31063532846.

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

It can be written as a sum of positive squares in 2 ways, for example, as 36190496644 + 28633039369 = 190238^2 + 169213^2 .

It is a cyclic number.

It is not a de Polignac number, because 64823536013 - 2¹² = 64823531917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64823536003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 700856 + ... + 787937.

It is an arithmetic number, because the mean of its divisors is an integer number (16206267087).

Almost surely, 2^64823536013 is an apocalyptic number.

It is an amenable number.

64823536013 is a deficient number, since it is larger than the sum of its proper divisors (1532335).

64823536013 is a wasteful number, since it uses less digits than its factorization.

64823536013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1532334.

The product of its (nonzero) digits is 311040, while the sum is 41.

The spelling of 64823536013 in words is "sixty-four billion, eight hundred twenty-three million, five hundred thirty-six thousand, thirteen".