128801554701 has 4 divisors (see below), whose sum is σ = 171735406272. Its totient is φ = 85867703132.

The previous prime is 128801554633. The next prime is 128801554711. The reversal of 128801554701 is 107455108821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 128801554701 - 2²² = 128797360397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128801554711) 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, 21466925781 + ... + 21466925786.

It is an arithmetic number, because the mean of its divisors is an integer number (42933851568).

Almost surely, 2^128801554701 is an apocalyptic number.

It is an amenable number.

128801554701 is a deficient number, since it is larger than the sum of its proper divisors (42933851571).

128801554701 is an equidigital number, since it uses as much as digits as its factorization.

128801554701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42933851570.

The product of its (nonzero) digits is 89600, while the sum is 42.

The spelling of 128801554701 in words is "one hundred twenty-eight billion, eight hundred one million, five hundred fifty-four thousand, seven hundred one".