100666611641 has 2 divisors, whose sum is σ = 100666611642. Its totient is φ = 100666611640.

The previous prime is 100666611637. The next prime is 100666611763. The reversal of 100666611641 is 146116666001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98331789241 + 2334822400 = 313579^2 + 48320^2 .

It is an emirp because it is prime and its reverse (146116666001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100666611641 - 2² = 100666611637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100666611595 and 100666611604.

It is not a weakly prime, because it can be changed into another prime (100666611611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50333305820 + 50333305821.

It is an arithmetic number, because the mean of its divisors is an integer number (50333305821).

Almost surely, 2^100666611641 is an apocalyptic number.

It is an amenable number.

100666611641 is a deficient number, since it is larger than the sum of its proper divisors (1).

100666611641 is an equidigital number, since it uses as much as digits as its factorization.

100666611641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 100666611641 in words is "one hundred billion, six hundred sixty-six million, six hundred eleven thousand, six hundred forty-one".