209104601481 has 6 divisors (see below), whose sum is σ = 302039979930. Its totient is φ = 139403067648.

The previous prime is 209104601443. The next prime is 209104601533. The reversal of 209104601481 is 184106401902.

209104601481 is a `hidden beast` number, since 2 + 0 + 9 + 1 + 0 + 4 + 601 + 48 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 208286355456 + 818246025 = 456384^2 + 28605^2 .

It is not a de Polignac number, because 209104601481 - 2⁶ = 209104601417 is a prime.

It is a super-2 number, since 2×209104601481² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (209104601081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11616922296 + ... + 11616922313.

It is an arithmetic number, because the mean of its divisors is an integer number (50339996655).

Almost surely, 2^209104601481 is an apocalyptic number.

It is an amenable number.

209104601481 is a deficient number, since it is larger than the sum of its proper divisors (92935378449).

209104601481 is a wasteful number, since it uses less digits than its factorization.

209104601481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23233844615 (or 23233844612 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The spelling of 209104601481 in words is "two hundred nine billion, one hundred four million, six hundred one thousand, four hundred eighty-one".