100105600005491 has 2 divisors, whose sum is σ = 100105600005492. Its totient is φ = 100105600005490.

The previous prime is 100105600005479. The next prime is 100105600005557. The reversal of 100105600005491 is 194500006501001.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100105600005491 is a prime.

It is a super-2 number, since 2×100105600005491² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (100105603005491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50052800002745 + 50052800002746.

It is an arithmetic number, because the mean of its divisors is an integer number (50052800002746).

Almost surely, 2^{100105600005491} is an apocalyptic number.

100105600005491 is a deficient number, since it is larger than the sum of its proper divisors (1).

100105600005491 is an equidigital number, since it uses as much as digits as its factorization.

100105600005491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 32.

Adding to 100105600005491 its reverse (194500006501001), we get a palindrome (294605606506492).

The spelling of 100105600005491 in words is "one hundred trillion, one hundred five billion, six hundred million, five thousand, four hundred ninety-one".