264442040644 has 36 divisors (see below), whose sum is σ = 486472286160. Its totient is φ = 125765551120.

The previous prime is 264442040627. The next prime is 264442040663. The reversal of 264442040644 is 446040244462.

It is a happy number.

264442040644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 264442040597 and 264442040606.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 29679 + ... + 727849.

It is an arithmetic number, because the mean of its divisors is an integer number (13513119060).

Almost surely, 2^264442040644 is an apocalyptic number.

It is an amenable number.

264442040644 is a deficient number, since it is larger than the sum of its proper divisors (222030245516).

264442040644 is a wasteful number, since it uses less digits than its factorization.

264442040644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698400 (or 698375 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 40.

The spelling of 264442040644 in words is "two hundred sixty-four billion, four hundred forty-two million, forty thousand, six hundred forty-four".