5106515101666 has 24 divisors (see below), whose sum is σ = 8475925758300. Its totient is φ = 2305565069280.

The previous prime is 5106515101621. The next prime is 5106515101669. The reversal of 5106515101666 is 6661015156015.

It can be written as a sum of positive squares in 2 ways, for example, as 3561165281025 + 1545349820641 = 1887105^2 + 1243121^2 .

It is not an unprimeable number, because it can be changed into a prime (5106515101669) 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 11 ways as a sum of consecutive naturals, for example, 70773681 + ... + 70845796.

Almost surely, 2^{5106515101666} is an apocalyptic number.

5106515101666 is a deficient number, since it is larger than the sum of its proper divisors (3369410656634).

5106515101666 is a wasteful number, since it uses less digits than its factorization.

5106515101666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141619650 (or 141619639 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 43.

The spelling of 5106515101666 in words is "five trillion, one hundred six billion, five hundred fifteen million, one hundred one thousand, six hundred sixty-six".