201085988006437 has 2 divisors, whose sum is σ = 201085988006438. Its totient is φ = 201085988006436.

The previous prime is 201085988006377. The next prime is 201085988006479. The reversal of 201085988006437 is 734600889580102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 187553956261156 + 13532031745281 = 13695034^2 + 3678591^2 .

It is a cyclic number.

It is not a de Polignac number, because 201085988006437 - 2¹⁵ = 201085987973669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201085988000437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100542994003218 + 100542994003219.

It is an arithmetic number, because the mean of its divisors is an integer number (100542994003219).

It is a 1-persistent number, because it is pandigital, but 2⋅201085988006437 = 402171976012874 is not.

Almost surely, 2^{201085988006437} is an apocalyptic number.

It is an amenable number.

201085988006437 is a deficient number, since it is larger than the sum of its proper divisors (1).

201085988006437 is an equidigital number, since it uses as much as digits as its factorization.

201085988006437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23224320, while the sum is 61.

The spelling of 201085988006437 in words is "two hundred one trillion, eighty-five billion, nine hundred eighty-eight million, six thousand, four hundred thirty-seven".