10500165506505 has 16 divisors (see below), whose sum is σ = 16844129740800. Its totient is φ = 5585466626688.

The previous prime is 10500165506503. The next prime is 10500165506513. The reversal of 10500165506505 is 50560556100501.

It is not a de Polignac number, because 10500165506505 - 2¹ = 10500165506503 is a prime.

It is a super-2 number, since 2×10500165506505² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10500165506503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 913846780 + ... + 913858269.

It is an arithmetic number, because the mean of its divisors is an integer number (1052758108800).

Almost surely, 2^{10500165506505} is an apocalyptic number.

10500165506505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10500165506505 is a deficient number, since it is larger than the sum of its proper divisors (6343964234295).

10500165506505 is a wasteful number, since it uses less digits than its factorization.

10500165506505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1827705440.

The product of its (nonzero) digits is 112500, while the sum is 39.

The spelling of 10500165506505 in words is "ten trillion, five hundred billion, one hundred sixty-five million, five hundred six thousand, five hundred five".