128247881753 has 2 divisors, whose sum is σ = 128247881754. Its totient is φ = 128247881752.

The previous prime is 128247881743. The next prime is 128247881759. The reversal of 128247881753 is 357188742821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126534584089 + 1713297664 = 355717^2 + 41392^2 .

It is a cyclic number.

It is not a de Polignac number, because 128247881753 - 2⁶ = 128247881689 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (128247881759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64123940876 + 64123940877.

It is an arithmetic number, because the mean of its divisors is an integer number (64123940877).

Almost surely, 2^128247881753 is an apocalyptic number.

It is an amenable number.

128247881753 is a deficient number, since it is larger than the sum of its proper divisors (1).

128247881753 is an equidigital number, since it uses as much as digits as its factorization.

128247881753 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6021120, while the sum is 56.

The spelling of 128247881753 in words is "one hundred twenty-eight billion, two hundred forty-seven million, eight hundred eighty-one thousand, seven hundred fifty-three".