201243500130377 has 2 divisors, whose sum is σ = 201243500130378. Its totient is φ = 201243500130376.

The previous prime is 201243500130353. The next prime is 201243500130419. The reversal of 201243500130377 is 773031005342102.

It is a happy number.

201243500130377 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 187283084189881 + 13960415940496 = 13685141^2 + 3736364^2 .

It is a cyclic number.

It is not a de Polignac number, because 201243500130377 - 2⁶ = 201243500130313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201243500130377.

It is not a weakly prime, because it can be changed into another prime (201243500130347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100621750065188 + 100621750065189.

It is an arithmetic number, because the mean of its divisors is an integer number (100621750065189).

Almost surely, 2^{201243500130377} is an apocalyptic number.

It is an amenable number.

201243500130377 is a deficient number, since it is larger than the sum of its proper divisors (1).

201243500130377 is an equidigital number, since it uses as much as digits as its factorization.

201243500130377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105840, while the sum is 38.

Adding to 201243500130377 its reverse (773031005342102), we get a palindrome (974274505472479).

The spelling of 201243500130377 in words is "two hundred one trillion, two hundred forty-three billion, five hundred million, one hundred thirty thousand, three hundred seventy-seven".