1723621745311 has 2 divisors, whose sum is σ = 1723621745312. Its totient is φ = 1723621745310.

The previous prime is 1723621745269. The next prime is 1723621745323. The reversal of 1723621745311 is 1135471263271.

It is a strong prime.

It is an emirp because it is prime and its reverse (1135471263271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1723621745311 - 2⁹ = 1723621744799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1723621745011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 861810872655 + 861810872656.

It is an arithmetic number, because the mean of its divisors is an integer number (861810872656).

Almost surely, 2^{1723621745311} is an apocalyptic number.

1723621745311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1723621745311 is an equidigital number, since it uses as much as digits as its factorization.

1723621745311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 211680, while the sum is 43.

The spelling of 1723621745311 in words is "one trillion, seven hundred twenty-three billion, six hundred twenty-one million, seven hundred forty-five thousand, three hundred eleven".