106212651666 has 32 divisors (see below), whose sum is σ = 234528715008. Its totient is φ = 31797871440.

The previous prime is 106212651661. The next prime is 106212651683. The reversal of 106212651666 is 666156212601.

It is a super-2 number, since 2×106212651666² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (106212651661) 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 15 ways as a sum of consecutive naturals, for example, 9688996 + ... + 9699951.

It is an arithmetic number, because the mean of its divisors is an integer number (7329022344).

Almost surely, 2^106212651666 is an apocalyptic number.

106212651666 is an abundant number, since it is smaller than the sum of its proper divisors (128316063342).

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

106212651666 is a wasteful number, since it uses less digits than its factorization.

106212651666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19389046.

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 106212651666 in words is "one hundred six billion, two hundred twelve million, six hundred fifty-one thousand, six hundred sixty-six".