106542043506281 has 2 divisors, whose sum is σ = 106542043506282. Its totient is φ = 106542043506280.

The previous prime is 106542043506259. The next prime is 106542043506319. The reversal of 106542043506281 is 182605340245601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94325061227881 + 12216982278400 = 9712109^2 + 3495280^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-106542043506281 is a prime.

It is a super-2 number, since 2×106542043506281² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (106542043506581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53271021753140 + 53271021753141.

It is an arithmetic number, because the mean of its divisors is an integer number (53271021753141).

Almost surely, 2^{106542043506281} is an apocalyptic number.

It is an amenable number.

106542043506281 is a deficient number, since it is larger than the sum of its proper divisors (1).

106542043506281 is an equidigital number, since it uses as much as digits as its factorization.

106542043506281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1382400, while the sum is 47.

The spelling of 106542043506281 in words is "one hundred six trillion, five hundred forty-two billion, forty-three million, five hundred six thousand, two hundred eighty-one".