16885561552 has 20 divisors (see below), whose sum is σ = 32753106916. Its totient is φ = 8433146880.

The previous prime is 16885561543. The next prime is 16885561571. The reversal of 16885561552 is 25516558861.

It can be written as a sum of positive squares in 2 ways, for example, as 6958229056 + 9927332496 = 83416^2 + 99636^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16885561552.

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 3 ways as a sum of consecutive naturals, for example, 587649 + ... + 615712.

Almost surely, 2^16885561552 is an apocalyptic number.

It is an amenable number.

16885561552 is a deficient number, since it is larger than the sum of its proper divisors (15867545364).

16885561552 is a wasteful number, since it uses less digits than its factorization.

16885561552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204246 (or 1204240 counting only the distinct ones).

The product of its digits is 2880000, while the sum is 52.

The spelling of 16885561552 in words is "sixteen billion, eight hundred eighty-five million, five hundred sixty-one thousand, five hundred fifty-two".