181755440783753 has 2 divisors, whose sum is σ = 181755440783754. Its totient is φ = 181755440783752.

The previous prime is 181755440783687. The next prime is 181755440783759. The reversal of 181755440783753 is 357387044557181.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117961147224064 + 63794293559689 = 10860992^2 + 7987133^2 .

It is a cyclic number.

It is not a de Polignac number, because 181755440783753 - 2³⁶ = 181686721307017 is a prime.

It is not a weakly prime, because it can be changed into another prime (181755440783759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90877720391876 + 90877720391877.

It is an arithmetic number, because the mean of its divisors is an integer number (90877720391877).

Almost surely, 2^{181755440783753} is an apocalyptic number.

It is an amenable number.

181755440783753 is a deficient number, since it is larger than the sum of its proper divisors (1).

181755440783753 is an equidigital number, since it uses as much as digits as its factorization.

181755440783753 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 395136000, while the sum is 68.

The spelling of 181755440783753 in words is "one hundred eighty-one trillion, seven hundred fifty-five billion, four hundred forty million, seven hundred eighty-three thousand, seven hundred fifty-three".