64440233204396 has 48 divisors (see below), whose sum is σ = 136306604770560. Its totient is φ = 26039705065920.

The previous prime is 64440233204351. The next prime is 64440233204419. The reversal of 64440233204396 is 69340233204446.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 286921535 + ... + 287146038.

It is an arithmetic number, because the mean of its divisors is an integer number (2839720932720).

Almost surely, 2^{64440233204396} is an apocalyptic number.

It is an amenable number.

64440233204396 is an abundant number, since it is smaller than the sum of its proper divisors (71866371566164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64440233204396 is a wasteful number, since it uses less digits than its factorization.

64440233204396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574067814 (or 574067812 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 50.

Adding to 64440233204396 its sum of digits (50), we get a palindrome (64440233204446).

The spelling of 64440233204396 in words is "sixty-four trillion, four hundred forty billion, two hundred thirty-three million, two hundred four thousand, three hundred ninety-six".