143105600405561 has 2 divisors, whose sum is σ = 143105600405562. Its totient is φ = 143105600405560.

The previous prime is 143105600405539. The next prime is 143105600405609. The reversal of 143105600405561 is 165504006501341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73425361699600 + 69680238705961 = 8568860^2 + 8347469^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143105600405561 is a prime.

It is a super-2 number, since 2×143105600405561² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (143105600405161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71552800202780 + 71552800202781.

It is an arithmetic number, because the mean of its divisors is an integer number (71552800202781).

Almost surely, 2^{143105600405561} is an apocalyptic number.

It is an amenable number.

143105600405561 is a deficient number, since it is larger than the sum of its proper divisors (1).

143105600405561 is an equidigital number, since it uses as much as digits as its factorization.

143105600405561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216000, while the sum is 41.

The spelling of 143105600405561 in words is "one hundred forty-three trillion, one hundred five billion, six hundred million, four hundred five thousand, five hundred sixty-one".