16887591623 has 8 divisors (see below), whose sum is σ = 19693984800. Its totient is φ = 14475078240.

The previous prime is 16887591593. The next prime is 16887591629. The reversal of 16887591623 is 32619578861.

It is not a de Polignac number, because 16887591623 - 2¹² = 16887587527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16887591629) 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 7 ways as a sum of consecutive naturals, for example, 24617138 + ... + 24617823.

It is an arithmetic number, because the mean of its divisors is an integer number (2461748100).

Almost surely, 2^16887591623 is an apocalyptic number.

16887591623 is a deficient number, since it is larger than the sum of its proper divisors (2806393177).

16887591623 is an frugal number, since it uses more digits than its factorization.

16887591623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49234982 (or 49234968 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 56.

The spelling of 16887591623 in words is "sixteen billion, eight hundred eighty-seven million, five hundred ninety-one thousand, six hundred twenty-three".