210144434197 has 2 divisors, whose sum is σ = 210144434198. Its totient is φ = 210144434196.

The previous prime is 210144434183. The next prime is 210144434237. The reversal of 210144434197 is 791434441012.

It is an a-pointer prime, because the next prime (210144434237) can be obtained adding 210144434197 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 171291687876 + 38852746321 = 413874^2 + 197111^2 .

It is a cyclic number.

It is not a de Polignac number, because 210144434197 - 2⁷ = 210144434069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210144434177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105072217098 + 105072217099.

It is an arithmetic number, because the mean of its divisors is an integer number (105072217099).

Almost surely, 2^210144434197 is an apocalyptic number.

It is an amenable number.

210144434197 is a deficient number, since it is larger than the sum of its proper divisors (1).

210144434197 is an equidigital number, since it uses as much as digits as its factorization.

210144434197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 210144434197 in words is "two hundred ten billion, one hundred forty-four million, four hundred thirty-four thousand, one hundred ninety-seven".