18773329152373 has 2 divisors, whose sum is σ = 18773329152374. Its totient is φ = 18773329152372.

The previous prime is 18773329152317. The next prime is 18773329152407. The reversal of 18773329152373 is 37325192337781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14868682016049 + 3904647136324 = 3855993^2 + 1976018^2 .

It is an emirp because it is prime and its reverse (37325192337781) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18773329152373 is a prime.

It is a super-2 number, since 2×18773329152373² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18773329159373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9386664576186 + 9386664576187.

It is an arithmetic number, because the mean of its divisors is an integer number (9386664576187).

Almost surely, 2^{18773329152373} is an apocalyptic number.

It is an amenable number.

18773329152373 is a deficient number, since it is larger than the sum of its proper divisors (1).

18773329152373 is an equidigital number, since it uses as much as digits as its factorization.

18773329152373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40007520, while the sum is 61.

The spelling of 18773329152373 in words is "eighteen trillion, seven hundred seventy-three billion, three hundred twenty-nine million, one hundred fifty-two thousand, three hundred seventy-three".