107666818505 has 12 divisors (see below), whose sum is σ = 137247254220. Its totient is φ = 81066779904.

The previous prime is 107666818499. The next prime is 107666818507. The reversal of 107666818505 is 505818666701.

It can be written as a sum of positive squares in 6 ways, for example, as 1726984249 + 105939834256 = 41557^2 + 325484^2 .

It is not a de Polignac number, because 107666818505 - 2⁴ = 107666818489 is a prime.

It is a super-2 number, since 2×107666818505² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (107666818507) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37253510 + ... + 37256399.

It is an arithmetic number, because the mean of its divisors is an integer number (11437271185).

Almost surely, 2^107666818505 is an apocalyptic number.

It is an amenable number.

107666818505 is a deficient number, since it is larger than the sum of its proper divisors (29580435715).

107666818505 is an equidigital number, since it uses as much as digits as its factorization.

107666818505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74509948 (or 74509931 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 53.

The spelling of 107666818505 in words is "one hundred seven billion, six hundred sixty-six million, eight hundred eighteen thousand, five hundred five".