128050785387 has 16 divisors (see below), whose sum is σ = 216805562880. Its totient is φ = 73171877256.

The previous prime is 128050785377. The next prime is 128050785389. The reversal of 128050785387 is 783587050821.

128050785387 is a `hidden beast` number, since 1 + 2 + 8 + 0 + 507 + 8 + 53 + 87 = 666.

It is not a de Polignac number, because 128050785387 - 2¹⁸ = 128050523243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128050785389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 338758503 + ... + 338758880.

It is an arithmetic number, because the mean of its divisors is an integer number (13550347680).

Almost surely, 2^128050785387 is an apocalyptic number.

128050785387 is a deficient number, since it is larger than the sum of its proper divisors (88754777493).

128050785387 is an equidigital number, since it uses as much as digits as its factorization.

128050785387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677517399 (or 677517393 counting only the distinct ones).

The product of its (nonzero) digits is 3763200, while the sum is 54.

The spelling of 128050785387 in words is "one hundred twenty-eight billion, fifty million, seven hundred eighty-five thousand, three hundred eighty-seven".