16606402656 has 48 divisors (see below), whose sum is σ = 44414307504. Its totient is φ = 5431023104.

The previous prime is 16606402643. The next prime is 16606402669. The reversal of 16606402656 is 65620460661.

It is a happy number.

16606402656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (16606402643) and next prime (16606402669).

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1626831 + ... + 1637006.

It is an arithmetic number, because the mean of its divisors is an integer number (925298073).

Almost surely, 2^16606402656 is an apocalyptic number.

16606402656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16606402656 is an abundant number, since it is smaller than the sum of its proper divisors (27807904848).

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

16606402656 is a wasteful number, since it uses less digits than its factorization.

16606402656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3263903 (or 3263895 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 16606402656 in words is "sixteen billion, six hundred six million, four hundred two thousand, six hundred fifty-six".