505166153553212 has 6 divisors (see below), whose sum is σ = 884040768718128. Its totient is φ = 252583076776604.

The previous prime is 505166153553211. The next prime is 505166153553221. The reversal of 505166153553212 is 212355351661505.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505166153553211) by changing a digit.

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, 63145769194148 + ... + 63145769194155.

It is an arithmetic number, because the mean of its divisors is an integer number (147340128119688).

Almost surely, 2^{505166153553212} is an apocalyptic number.

It is an amenable number.

505166153553212 is a deficient number, since it is larger than the sum of its proper divisors (378874615164916).

505166153553212 is a wasteful number, since it uses less digits than its factorization.

505166153553212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126291538388307 (or 126291538388305 counting only the distinct ones).

The product of its (nonzero) digits is 4050000, while the sum is 50.

The spelling of 505166153553212 in words is "five hundred five trillion, one hundred sixty-six billion, one hundred fifty-three million, five hundred fifty-three thousand, two hundred twelve".