73386660961 has 2 divisors, whose sum is σ = 73386660962. Its totient is φ = 73386660960.

The previous prime is 73386660959. The next prime is 73386661003. The reversal of 73386660961 is 16906668337.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52546851361 + 20839809600 = 229231^2 + 144360^2 .

It is a cyclic number.

It is not a de Polignac number, because 73386660961 - 2¹ = 73386660959 is a prime.

It is a super-2 number, since 2×73386660961² (a number of 23 digits) contains 22 as substring.

Together with 73386660959, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (73386660931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36693330480 + 36693330481.

It is an arithmetic number, because the mean of its divisors is an integer number (36693330481).

Almost surely, 2^73386660961 is an apocalyptic number.

It is an amenable number.

73386660961 is a deficient number, since it is larger than the sum of its proper divisors (1).

73386660961 is an equidigital number, since it uses as much as digits as its factorization.

73386660961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5878656, while the sum is 55.

The spelling of 73386660961 in words is "seventy-three billion, three hundred eighty-six million, six hundred sixty thousand, nine hundred sixty-one".