64243444342 has 64 divisors (see below), whose sum is σ = 122548308480. Its totient is φ = 24531494400.

The previous prime is 64243444333. The next prime is 64243444361. The reversal of 64243444342 is 24344434246.

It is a junction number, because it is equal to n+sod(n) for n = 64243444295 and 64243444304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3051492 + ... + 3072472.

It is an arithmetic number, because the mean of its divisors is an integer number (1914817320).

Almost surely, 2^64243444342 is an apocalyptic number.

64243444342 is a deficient number, since it is larger than the sum of its proper divisors (58304864138).

64243444342 is a wasteful number, since it uses less digits than its factorization.

64243444342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21397.

The product of its digits is 884736, while the sum is 40.

Adding to 64243444342 its reverse (24344434246), we get a palindrome (88587878588).

The spelling of 64243444342 in words is "sixty-four billion, two hundred forty-three million, four hundred forty-four thousand, three hundred forty-two".