42643447016201 has 2 divisors, whose sum is σ = 42643447016202. Its totient is φ = 42643447016200.

The previous prime is 42643447016197. The next prime is 42643447016207. The reversal of 42643447016201 is 10261074434624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38466230473225 + 4177216542976 = 6202115^2 + 2043824^2 .

It is a cyclic number.

It is not a de Polignac number, because 42643447016201 - 2² = 42643447016197 is a prime.

It is not a weakly prime, because it can be changed into another prime (42643447016207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21321723508100 + 21321723508101.

It is an arithmetic number, because the mean of its divisors is an integer number (21321723508101).

Almost surely, 2^{42643447016201} is an apocalyptic number.

It is an amenable number.

42643447016201 is a deficient number, since it is larger than the sum of its proper divisors (1).

42643447016201 is an equidigital number, since it uses as much as digits as its factorization.

42643447016201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 774144, while the sum is 44.

The spelling of 42643447016201 in words is "forty-two trillion, six hundred forty-three billion, four hundred forty-seven million, sixteen thousand, two hundred one".