16607685556 has 48 divisors (see below), whose sum is σ = 36318925440. Its totient is φ = 6455531520.

The previous prime is 16607685553. The next prime is 16607685557. The reversal of 16607685556 is 65558670661.

It is a junction number, because it is equal to n+sod(n) for n = 16607685497 and 16607685506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16607685553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71100 + ... + 195628.

It is an arithmetic number, because the mean of its divisors is an integer number (756644280).

Almost surely, 2^16607685556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16607685556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18159462720).

16607685556 is an abundant number, since it is smaller than the sum of its proper divisors (19711239884).

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

16607685556 is a wasteful number, since it uses less digits than its factorization.

16607685556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124984 (or 124982 counting only the distinct ones).

The product of its (nonzero) digits is 9072000, while the sum is 55.

The spelling of 16607685556 in words is "sixteen billion, six hundred seven million, six hundred eighty-five thousand, five hundred fifty-six".