16502665652 has 24 divisors (see below), whose sum is σ = 31592877120. Its totient is φ = 7480309760.

The previous prime is 16502665573. The next prime is 16502665661. The reversal of 16502665652 is 25656620561.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 506573 + ... + 538164.

It is an arithmetic number, because the mean of its divisors is an integer number (1316369880).

Almost surely, 2^16502665652 is an apocalyptic number.

It is an amenable number.

16502665652 is a deficient number, since it is larger than the sum of its proper divisors (15090211468).

16502665652 is a wasteful number, since it uses less digits than its factorization.

16502665652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045111 (or 1045109 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 44.

The spelling of 16502665652 in words is "sixteen billion, five hundred two million, six hundred sixty-five thousand, six hundred fifty-two".