73666733670349 has 2 divisors, whose sum is σ = 73666733670350. Its totient is φ = 73666733670348.

The previous prime is 73666733670329. The next prime is 73666733670371. The reversal of 73666733670349 is 94307633766637.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64986008732100 + 8680724938249 = 8061390^2 + 2946307^2 .

It is an emirp because it is prime and its reverse (94307633766637) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73666733670349 - 2¹⁷ = 73666733539277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73666733670319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36833366835174 + 36833366835175.

It is an arithmetic number, because the mean of its divisors is an integer number (36833366835175).

Almost surely, 2^{73666733670349} is an apocalyptic number.

It is an amenable number.

73666733670349 is a deficient number, since it is larger than the sum of its proper divisors (1).

73666733670349 is an equidigital number, since it uses as much as digits as its factorization.

73666733670349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296243648, while the sum is 70.

The spelling of 73666733670349 in words is "seventy-three trillion, six hundred sixty-six billion, seven hundred thirty-three million, six hundred seventy thousand, three hundred forty-nine".