16602538656 has 192 divisors, whose sum is σ = 50210496000. Its totient is φ = 4750617600.

The previous prime is 16602538651. The next prime is 16602538679. The reversal of 16602538656 is 65683520661.

16602538656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×16602538656³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (16602538651) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 7001151 + ... + 7003521.

It is an arithmetic number, because the mean of its divisors is an integer number (261513000).

Almost surely, 2^16602538656 is an apocalyptic number.

16602538656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16602538656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25105248000).

16602538656 is an abundant number, since it is smaller than the sum of its proper divisors (33607957344).

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

16602538656 is a wasteful number, since it uses less digits than its factorization.

16602538656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2763 (or 2755 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 48.

The spelling of 16602538656 in words is "sixteen billion, six hundred two million, five hundred thirty-eight thousand, six hundred fifty-six".