100666709117929 has 2 divisors, whose sum is σ = 100666709117930. Its totient is φ = 100666709117928.

The previous prime is 100666709117927. The next prime is 100666709117969. The reversal of 100666709117929 is 929711907666001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81144874722025 + 19521834395904 = 9008045^2 + 4418352^2 .

It is a cyclic number.

It is not a de Polignac number, because 100666709117929 - 2¹ = 100666709117927 is a prime.

Together with 100666709117927, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (100666709117927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50333354558964 + 50333354558965.

It is an arithmetic number, because the mean of its divisors is an integer number (50333354558965).

Almost surely, 2^{100666709117929} is an apocalyptic number.

It is an amenable number.

100666709117929 is a deficient number, since it is larger than the sum of its proper divisors (1).

100666709117929 is an equidigital number, since it uses as much as digits as its factorization.

100666709117929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15431472, while the sum is 64.

The spelling of 100666709117929 in words is "one hundred trillion, six hundred sixty-six billion, seven hundred nine million, one hundred seventeen thousand, nine hundred twenty-nine".