128081761039 has 2 divisors, whose sum is σ = 128081761040. Its totient is φ = 128081761038.

The previous prime is 128081761013. The next prime is 128081761111. The reversal of 128081761039 is 930167180821.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128081761039 - 2¹⁷ = 128081629967 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128081761039.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128081701039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64040880519 + 64040880520.

It is an arithmetic number, because the mean of its divisors is an integer number (64040880520).

Almost surely, 2^128081761039 is an apocalyptic number.

128081761039 is a deficient number, since it is larger than the sum of its proper divisors (1).

128081761039 is an equidigital number, since it uses as much as digits as its factorization.

128081761039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 46.

The spelling of 128081761039 in words is "one hundred twenty-eight billion, eighty-one million, seven hundred sixty-one thousand, thirty-nine".