16556313660 has 24 divisors (see below), whose sum is σ = 46357678416. Its totient is φ = 4415016960.

The previous prime is 16556313647. The next prime is 16556313667. The reversal of 16556313660 is 6631365561.

It is a super-2 number, since 2×16556313660² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16556313667) 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, 137969221 + ... + 137969340.

It is an arithmetic number, because the mean of its divisors is an integer number (1931569934).

Almost surely, 2^16556313660 is an apocalyptic number.

16556313660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16556313660 is an abundant number, since it is smaller than the sum of its proper divisors (29801364756).

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

16556313660 is a wasteful number, since it uses less digits than its factorization.

16556313660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275938573 (or 275938571 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 42.

The spelling of 16556313660 in words is "sixteen billion, five hundred fifty-six million, three hundred thirteen thousand, six hundred sixty".