128570689487 has 2 divisors, whose sum is σ = 128570689488. Its totient is φ = 128570689486.

The previous prime is 128570689469. The next prime is 128570689553. The reversal of 128570689487 is 784986075821.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128570689487 is a prime.

It is a super-3 number, since 3×128570689487³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128570619487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64285344743 + 64285344744.

It is an arithmetic number, because the mean of its divisors is an integer number (64285344744).

Almost surely, 2^128570689487 is an apocalyptic number.

128570689487 is a deficient number, since it is larger than the sum of its proper divisors (1).

128570689487 is an equidigital number, since it uses as much as digits as its factorization.

128570689487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54190080, while the sum is 65.

The spelling of 128570689487 in words is "one hundred twenty-eight billion, five hundred seventy million, six hundred eighty-nine thousand, four hundred eighty-seven".