505212115165 has 8 divisors (see below), whose sum is σ = 608001671520. Its totient is φ = 403004936592.

The previous prime is 505212115157. The next prime is 505212115169. The reversal of 505212115165 is 561511212505.

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 505212115165 - 2³ = 505212115157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 505212115165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505212115169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145592535 + ... + 145596004.

It is an arithmetic number, because the mean of its divisors is an integer number (76000208940).

Almost surely, 2^505212115165 is an apocalyptic number.

It is an amenable number.

505212115165 is a deficient number, since it is larger than the sum of its proper divisors (102789556355).

505212115165 is a wasteful number, since it uses less digits than its factorization.

505212115165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291188891.

The product of its (nonzero) digits is 15000, while the sum is 34.

The spelling of 505212115165 in words is "five hundred five billion, two hundred twelve million, one hundred fifteen thousand, one hundred sixty-five".