8106178100 has 18 divisors (see below), whose sum is σ = 17590406694. Its totient is φ = 3242471200.

The previous prime is 8106178081. The next prime is 8106178103. The reversal of 8106178100 is 18716018.

It can be written as a sum of positive squares in 3 ways, for example, as 139901584 + 7966276516 = 11828^2 + 89254^2 .

It is a super-2 number, since 2×8106178100² (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 (8106178103) 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 5 ways as a sum of consecutive naturals, for example, 40530791 + ... + 40530990.

Almost surely, 2^8106178100 is an apocalyptic number.

It is an amenable number.

8106178100 is an abundant number, since it is smaller than the sum of its proper divisors (9484228594).

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

8106178100 is a wasteful number, since it uses less digits than its factorization.

8106178100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81061795 (or 81061788 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 32.

The square root of 8106178100 is about 90034.3162355332. The cubic root of 8106178100 is about 2008.8093160059.

The spelling of 8106178100 in words is "eight billion, one hundred six million, one hundred seventy-eight thousand, one hundred".