128901867707 has 4 divisors (see below), whose sum is σ = 128960381880. Its totient is φ = 128843353536.

The previous prime is 128901867701. The next prime is 128901867767. The reversal of 128901867707 is 707768109821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 128901867707 - 2¹⁰ = 128901866683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128901867701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29253782 + ... + 29258187.

It is an arithmetic number, because the mean of its divisors is an integer number (32240095470).

Almost surely, 2^128901867707 is an apocalyptic number.

128901867707 is a deficient number, since it is larger than the sum of its proper divisors (58514173).

128901867707 is an equidigital number, since it uses as much as digits as its factorization.

128901867707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58514172.

The product of its (nonzero) digits is 2370816, while the sum is 56.

The spelling of 128901867707 in words is "one hundred twenty-eight billion, nine hundred one million, eight hundred sixty-seven thousand, seven hundred seven".