128247881719 has 2 divisors, whose sum is σ = 128247881720. Its totient is φ = 128247881718.

The previous prime is 128247881689. The next prime is 128247881743. The reversal of 128247881719 is 917188742821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128247881719 - 2⁵ = 128247881687 is a prime.

It is a super-2 number, since 2×128247881719² (a number of 23 digits) contains 22 as substring.

It is a congruent 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, 64123940859 + 64123940860.

It is an arithmetic number, because the mean of its divisors is an integer number (64123940860).

Almost surely, 2^128247881719 is an apocalyptic number.

128247881719 is a deficient number, since it is larger than the sum of its proper divisors (1).

128247881719 is an equidigital number, since it uses as much as digits as its factorization.

128247881719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3612672, while the sum is 58.

The spelling of 128247881719 in words is "one hundred twenty-eight billion, two hundred forty-seven million, eight hundred eighty-one thousand, seven hundred nineteen".