128023702487 has 2 divisors, whose sum is σ = 128023702488. Its totient is φ = 128023702486.

The previous prime is 128023702483. The next prime is 128023702519. The reversal of 128023702487 is 784207320821.

It is a weak prime.

It is an emirp because it is prime and its reverse (784207320821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128023702487 - 2² = 128023702483 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128023702483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64011851243 + 64011851244.

It is an arithmetic number, because the mean of its divisors is an integer number (64011851244).

Almost surely, 2^128023702487 is an apocalyptic number.

128023702487 is a deficient number, since it is larger than the sum of its proper divisors (1).

128023702487 is an equidigital number, since it uses as much as digits as its factorization.

128023702487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 301056, while the sum is 44.

The spelling of 128023702487 in words is "one hundred twenty-eight billion, twenty-three million, seven hundred two thousand, four hundred eighty-seven".