16663406651502 has 48 divisors (see below), whose sum is σ = 36270800699760. Its totient is φ = 5101175579136.

The previous prime is 16663406651473. The next prime is 16663406651537. The reversal of 16663406651502 is 20515660436661.

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 23 ways as a sum of consecutive naturals, for example, 41509227 + ... + 41908742.

It is an arithmetic number, because the mean of its divisors is an integer number (755641681245).

Almost surely, 2^{16663406651502} is an apocalyptic number.

16663406651502 is an abundant number, since it is smaller than the sum of its proper divisors (19607394048258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16663406651502 is a wasteful number, since it uses less digits than its factorization.

16663406651502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83418197 (or 83418184 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 51.

The spelling of 16663406651502 in words is "sixteen trillion, six hundred sixty-three billion, four hundred six million, six hundred fifty-one thousand, five hundred two".