503040666065 has 32 divisors (see below), whose sum is σ = 704644254720. Its totient is φ = 337563915264.

The previous prime is 503040666059. The next prime is 503040666077. The reversal of 503040666065 is 560666040305.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 503040666065 - 2²² = 503036471761 is a prime.

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 in 31 ways as a sum of consecutive naturals, for example, 24686201 + ... + 24706569.

It is an arithmetic number, because the mean of its divisors is an integer number (22020132960).

Almost surely, 2^503040666065 is an apocalyptic number.

It is an amenable number.

503040666065 is a deficient number, since it is larger than the sum of its proper divisors (201603588655).

503040666065 is a wasteful number, since it uses less digits than its factorization.

503040666065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35441.

The product of its (nonzero) digits is 388800, while the sum is 41.

The spelling of 503040666065 in words is "five hundred three billion, forty million, six hundred sixty-six thousand, sixty-five".