73681020211 has 2 divisors, whose sum is σ = 73681020212. Its totient is φ = 73681020210.

The previous prime is 73681020199. The next prime is 73681020221. The reversal of 73681020211 is 11202018637.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73681020211 is a prime.

It is not a weakly prime, because it can be changed into another prime (73681020221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36840510105 + 36840510106.

It is an arithmetic number, because the mean of its divisors is an integer number (36840510106).

Almost surely, 2^73681020211 is an apocalyptic number.

73681020211 is a deficient number, since it is larger than the sum of its proper divisors (1).

73681020211 is an equidigital number, since it uses as much as digits as its factorization.

73681020211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 31.

Adding to 73681020211 its reverse (11202018637), we get a palindrome (84883038848).

The spelling of 73681020211 in words is "seventy-three billion, six hundred eighty-one million, twenty thousand, two hundred eleven".