210153550349 has 2 divisors, whose sum is σ = 210153550350. Its totient is φ = 210153550348.

The previous prime is 210153550339. The next prime is 210153550403. The reversal of 210153550349 is 943055351012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163110976900 + 47042573449 = 403870^2 + 216893^2 .

It is a cyclic number.

It is not a de Polignac number, because 210153550349 - 2³² = 205858583053 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210153550339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105076775174 + 105076775175.

It is an arithmetic number, because the mean of its divisors is an integer number (105076775175).

Almost surely, 2^210153550349 is an apocalyptic number.

It is an amenable number.

210153550349 is a deficient number, since it is larger than the sum of its proper divisors (1).

210153550349 is an equidigital number, since it uses as much as digits as its factorization.

210153550349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81000, while the sum is 38.

The spelling of 210153550349 in words is "two hundred ten billion, one hundred fifty-three million, five hundred fifty thousand, three hundred forty-nine".