106105666066 has 4 divisors (see below), whose sum is σ = 159158499102. Its totient is φ = 53052833032.

The previous prime is 106105665983. The next prime is 106105666091. The reversal of 106105666066 is 660666501601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 660666501601 = 1907 ⋅346442843.

It can be written as a sum of positive squares in only one way, i.e., 53077248225 + 53028417841 = 230385^2 + 230279^2 .

It is a super-2 number, since 2×106105666066² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26526416515 + ... + 26526416518.

Almost surely, 2^106105666066 is an apocalyptic number.

106105666066 is a deficient number, since it is larger than the sum of its proper divisors (53052833036).

106105666066 is an equidigital number, since it uses as much as digits as its factorization.

106105666066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53052833035.

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 106105666066 in words is "one hundred six billion, one hundred five million, six hundred sixty-six thousand, sixty-six".