128361917753 has 2 divisors, whose sum is σ = 128361917754. Its totient is φ = 128361917752.

The previous prime is 128361917699. The next prime is 128361917779. The reversal of 128361917753 is 357719163821.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118069206544 + 10292711209 = 343612^2 + 101453^2 .

It is a cyclic number.

It is not a de Polignac number, because 128361917753 - 2¹⁰ = 128361916729 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 128361917695 and 128361917704.

It is not a weakly prime, because it can be changed into another prime (128361917653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64180958876 + 64180958877.

It is an arithmetic number, because the mean of its divisors is an integer number (64180958877).

Almost surely, 2^128361917753 is an apocalyptic number.

It is an amenable number.

128361917753 is a deficient number, since it is larger than the sum of its proper divisors (1).

128361917753 is an equidigital number, since it uses as much as digits as its factorization.

128361917753 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1905120, while the sum is 53.

The spelling of 128361917753 in words is "one hundred twenty-eight billion, three hundred sixty-one million, nine hundred seventeen thousand, seven hundred fifty-three".