506540665564 has 12 divisors (see below), whose sum is σ = 886451174784. Its totient is φ = 253268901344.

The previous prime is 506540665537. The next prime is 506540665613. The reversal of 506540665564 is 465566045605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1082424 + ... + 1478080.

It is an arithmetic number, because the mean of its divisors is an integer number (73870931232).

Almost surely, 2^506540665564 is an apocalyptic number.

It is an amenable number.

506540665564 is a deficient number, since it is larger than the sum of its proper divisors (379910509220).

506540665564 is a wasteful number, since it uses less digits than its factorization.

506540665564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715724 (or 715722 counting only the distinct ones).

The product of its (nonzero) digits is 12960000, while the sum is 52.

The spelling of 506540665564 in words is "five hundred six billion, five hundred forty million, six hundred sixty-five thousand, five hundred sixty-four".