106400108666 has 8 divisors (see below), whose sum is σ = 161012554164. Its totient is φ = 52729257280.

The previous prime is 106400108651. The next prime is 106400108669. The reversal of 106400108666 is 666801004601.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 71567485441 + 34832623225 = 267521^2 + 186635^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×106400108666² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (106400108669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235398245 + ... + 235398696.

Almost surely, 2^106400108666 is an apocalyptic number.

106400108666 is a deficient number, since it is larger than the sum of its proper divisors (54612445498).

106400108666 is a wasteful number, since it uses less digits than its factorization.

106400108666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470797056.

The product of its (nonzero) digits is 41472, while the sum is 38.

The spelling of 106400108666 in words is "one hundred six billion, four hundred million, one hundred eight thousand, six hundred sixty-six".