73407734161 has 2 divisors, whose sum is σ = 73407734162. Its totient is φ = 73407734160.

The previous prime is 73407734033. The next prime is 73407734171. The reversal of 73407734161 is 16143770437.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46518293761 + 26889440400 = 215681^2 + 163980^2 .

It is a cyclic number.

It is not a de Polignac number, because 73407734161 - 2⁷ = 73407734033 is a prime.

It is not a weakly prime, because it can be changed into another prime (73407734171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36703867080 + 36703867081.

It is an arithmetic number, because the mean of its divisors is an integer number (36703867081).

Almost surely, 2^73407734161 is an apocalyptic number.

It is an amenable number.

73407734161 is a deficient number, since it is larger than the sum of its proper divisors (1).

73407734161 is an equidigital number, since it uses as much as digits as its factorization.

73407734161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 296352, while the sum is 43.

The spelling of 73407734161 in words is "seventy-three billion, four hundred seven million, seven hundred thirty-four thousand, one hundred sixty-one".