211800553147 has 2 divisors, whose sum is σ = 211800553148. Its totient is φ = 211800553146.

The previous prime is 211800553141. The next prime is 211800553177. The reversal of 211800553147 is 741355008112.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211800553147 is a prime.

It is not a weakly prime, because it can be changed into another prime (211800553141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105900276573 + 105900276574.

It is an arithmetic number, because the mean of its divisors is an integer number (105900276574).

Almost surely, 2^211800553147 is an apocalyptic number.

211800553147 is a deficient number, since it is larger than the sum of its proper divisors (1).

211800553147 is an equidigital number, since it uses as much as digits as its factorization.

211800553147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33600, while the sum is 37.

The spelling of 211800553147 in words is "two hundred eleven billion, eight hundred million, five hundred fifty-three thousand, one hundred forty-seven".