100666555110397 has 2 divisors, whose sum is σ = 100666555110398. Its totient is φ = 100666555110396.

The previous prime is 100666555110347. The next prime is 100666555110503. The reversal of 100666555110397 is 793011555666001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100625194126521 + 41360983876 = 10031211^2 + 203374^2 .

It is a cyclic number.

It is not a de Polignac number, because 100666555110397 - 2³¹ = 100664407626749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100666555110347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50333277555198 + 50333277555199.

It is an arithmetic number, because the mean of its divisors is an integer number (50333277555199).

Almost surely, 2^{100666555110397} is an apocalyptic number.

It is an amenable number.

100666555110397 is a deficient number, since it is larger than the sum of its proper divisors (1).

100666555110397 is an equidigital number, since it uses as much as digits as its factorization.

100666555110397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5103000, while the sum is 55.

The spelling of 100666555110397 in words is "one hundred trillion, six hundred sixty-six billion, five hundred fifty-five million, one hundred ten thousand, three hundred ninety-seven".