505161665007 has 16 divisors (see below), whose sum is σ = 709019074560. Its totient is φ = 319040361792.

The previous prime is 505161664919. The next prime is 505161665017. The reversal of 505161665007 is 700566161505.

It is not a de Polignac number, because 505161665007 - 2²⁴ = 505144887791 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 505161665007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505161665017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2287483 + ... + 2498579.

It is an arithmetic number, because the mean of its divisors is an integer number (44313692160).

Almost surely, 2^505161665007 is an apocalyptic number.

505161665007 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

505161665007 is a deficient number, since it is larger than the sum of its proper divisors (203857409553).

505161665007 is a wasteful number, since it uses less digits than its factorization.

505161665007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253102.

The product of its (nonzero) digits is 189000, while the sum is 42.

The spelling of 505161665007 in words is "five hundred five billion, one hundred sixty-one million, six hundred sixty-five thousand, seven".