505406352665 has 8 divisors (see below), whose sum is σ = 606491539200. Its totient is φ = 404322471472.

The previous prime is 505406352617. The next prime is 505406352721. The reversal of 505406352665 is 566253604505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 505406352665 - 2²⁸ = 505137917209 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1063886 + ... + 1463784.

It is an arithmetic number, because the mean of its divisors is an integer number (75811442400).

Almost surely, 2^505406352665 is an apocalyptic number.

It is an amenable number.

505406352665 is a deficient number, since it is larger than the sum of its proper divisors (101085186535).

505406352665 is a wasteful number, since it uses less digits than its factorization.

505406352665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652671.

The product of its (nonzero) digits is 3240000, while the sum is 47.

The spelling of 505406352665 in words is "five hundred five billion, four hundred six million, three hundred fifty-two thousand, six hundred sixty-five".