16503763606165 has 16 divisors (see below), whose sum is σ = 21614734109376. Its totient is φ = 11997288720000.

The previous prime is 16503763606153. The next prime is 16503763606217. The reversal of 16503763606165 is 56160636730561.

It is not a de Polignac number, because 16503763606165 - 2⁷ = 16503763606037 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 67983336 + ... + 68225665.

It is an arithmetic number, because the mean of its divisors is an integer number (1350920881836).

Almost surely, 2^{16503763606165} is an apocalyptic number.

It is an amenable number.

16503763606165 is a deficient number, since it is larger than the sum of its proper divisors (5110970503211).

16503763606165 is a wasteful number, since it uses less digits than its factorization.

16503763606165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136211220.

The product of its (nonzero) digits is 12247200, while the sum is 55.

The spelling of 16503763606165 in words is "sixteen trillion, five hundred three billion, seven hundred sixty-three million, six hundred six thousand, one hundred sixty-five".