128550851357 has 2 divisors, whose sum is σ = 128550851358. Its totient is φ = 128550851356.

The previous prime is 128550851329. The next prime is 128550851389. The reversal of 128550851357 is 753158055821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104237933881 + 24312917476 = 322859^2 + 155926^2 .

It is a cyclic number.

It is not a de Polignac number, because 128550851357 - 2⁶ = 128550851293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128550851257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64275425678 + 64275425679.

It is an arithmetic number, because the mean of its divisors is an integer number (64275425679).

Almost surely, 2^128550851357 is an apocalyptic number.

It is an amenable number.

128550851357 is a deficient number, since it is larger than the sum of its proper divisors (1).

128550851357 is an equidigital number, since it uses as much as digits as its factorization.

128550851357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680000, while the sum is 50.

The spelling of 128550851357 in words is "one hundred twenty-eight billion, five hundred fifty million, eight hundred fifty-one thousand, three hundred fifty-seven".