1720661200367 has 2 divisors, whose sum is σ = 1720661200368. Its totient is φ = 1720661200366.

The previous prime is 1720661200361. The next prime is 1720661200369. The reversal of 1720661200367 is 7630021660271.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1720661200367 - 2²⁴ = 1720644423151 is a prime.

Together with 1720661200369, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1720661200361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 860330600183 + 860330600184.

It is an arithmetic number, because the mean of its divisors is an integer number (860330600184).

Almost surely, 2^{1720661200367} is an apocalyptic number.

1720661200367 is a deficient number, since it is larger than the sum of its proper divisors (1).

1720661200367 is an equidigital number, since it uses as much as digits as its factorization.

1720661200367 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 41.

The spelling of 1720661200367 in words is "one trillion, seven hundred twenty billion, six hundred sixty-one million, two hundred thousand, three hundred sixty-seven".