16556510005108 has 12 divisors (see below), whose sum is σ = 28975304566852. Its totient is φ = 8277851557440.

The previous prime is 16556510005081. The next prime is 16556510005109. The reversal of 16556510005108 is 80150001565561.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8343998405604 + 8212511599504 = 2888598^2 + 2865748^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16556510005109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100768935 + ... + 100933102.

Almost surely, 2^{16556510005108} is an apocalyptic number.

It is an amenable number.

16556510005108 is a deficient number, since it is larger than the sum of its proper divisors (12418794561744).

16556510005108 is a wasteful number, since it uses less digits than its factorization.

16556510005108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201722562 (or 201722560 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 43.

The spelling of 16556510005108 in words is "sixteen trillion, five hundred fifty-six billion, five hundred ten million, five thousand, one hundred eight".