100105500505643 has 2 divisors, whose sum is σ = 100105500505644. Its totient is φ = 100105500505642.

The previous prime is 100105500505501. The next prime is 100105500505667. The reversal of 100105500505643 is 346505005501001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100105500505643 - 2⁴⁶ = 29736756327979 is a prime.

It is a super-2 number, since 2×100105500505643² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (100105500505693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50052750252821 + 50052750252822.

It is an arithmetic number, because the mean of its divisors is an integer number (50052750252822).

Almost surely, 2^{100105500505643} is an apocalyptic number.

100105500505643 is a deficient number, since it is larger than the sum of its proper divisors (1).

100105500505643 is an equidigital number, since it uses as much as digits as its factorization.

100105500505643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45000, while the sum is 35.

The spelling of 100105500505643 in words is "one hundred trillion, one hundred five billion, five hundred million, five hundred five thousand, six hundred forty-three".