264540643421144 has 8 divisors (see below), whose sum is σ = 496013706414660. Its totient is φ = 132270321710568.

The previous prime is 264540643421107. The next prime is 264540643421179. The reversal of 264540643421144 is 441124346045462.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 264540643421092 and 264540643421101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16533790213814 + ... + 16533790213829.

Almost surely, 2^{264540643421144} is an apocalyptic number.

It is an amenable number.

264540643421144 is a deficient number, since it is larger than the sum of its proper divisors (231473062993516).

264540643421144 is a wasteful number, since it uses less digits than its factorization.

264540643421144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33067580427649 (or 33067580427645 counting only the distinct ones).

The product of its (nonzero) digits is 8847360, while the sum is 50.

The spelling of 264540643421144 in words is "two hundred sixty-four trillion, five hundred forty billion, six hundred forty-three million, four hundred twenty-one thousand, one hundred forty-four".