128836700005 has 8 divisors (see below), whose sum is σ = 166496658552. Its totient is φ = 95140947648.

The previous prime is 128836699969. The next prime is 128836700071. The reversal of 128836700005 is 500007638821.

It can be written as a sum of positive squares in 4 ways, for example, as 3272068804 + 125564631201 = 57202^2 + 354351^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 128836700005 - 2⁹ = 128836699493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 991051474 + ... + 991051603.

It is an arithmetic number, because the mean of its divisors is an integer number (20812082319).

Almost surely, 2^128836700005 is an apocalyptic number.

It is an amenable number.

128836700005 is a deficient number, since it is larger than the sum of its proper divisors (37659958547).

128836700005 is a wasteful number, since it uses less digits than its factorization.

128836700005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1982103095.

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 128836700005 in words is "one hundred twenty-eight billion, eight hundred thirty-six million, seven hundred thousand, five".