501166506505 has 16 divisors (see below), whose sum is σ = 703298116224. Its totient is φ = 335665008000.

The previous prime is 501166506497. The next prime is 501166506521. The reversal of 501166506505 is 505605661105.

It is not a de Polignac number, because 501166506505 - 2³ = 501166506497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166498996 + ... + 166502005.

It is an arithmetic number, because the mean of its divisors is an integer number (43956132264).

Almost surely, 2^501166506505 is an apocalyptic number.

It is an amenable number.

501166506505 is a deficient number, since it is larger than the sum of its proper divisors (202131609719).

501166506505 is a wasteful number, since it uses less digits than its factorization.

501166506505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333001056.

The product of its (nonzero) digits is 135000, while the sum is 40.

The spelling of 501166506505 in words is "five hundred one billion, one hundred sixty-six million, five hundred six thousand, five hundred five".