64243311364 has 6 divisors (see below), whose sum is σ = 112425794894. Its totient is φ = 32121655680.

The previous prime is 64243311361. The next prime is 64243311383. The reversal of 64243311364 is 46311334246.

It can be written as a sum of positive squares in only one way, i.e., 58664715264 + 5578596100 = 242208^2 + 74690^2 .

It is not an unprimeable number, because it can be changed into a prime (64243311361) 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 as a sum of consecutive naturals, namely, 8030413917 + ... + 8030413924.

Almost surely, 2^64243311364 is an apocalyptic number.

It is an amenable number.

64243311364 is a deficient number, since it is larger than the sum of its proper divisors (48182483530).

64243311364 is a wasteful number, since it uses less digits than its factorization.

64243311364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16060827845 (or 16060827843 counting only the distinct ones).

The product of its digits is 124416, while the sum is 37.

The spelling of 64243311364 in words is "sixty-four billion, two hundred forty-three million, three hundred eleven thousand, three hundred sixty-four".