128140816407 has 8 divisors (see below), whose sum is σ = 170867579376. Its totient is φ = 85420632192.

The previous prime is 128140816399. The next prime is 128140816417. The reversal of 128140816407 is 704618041821.

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

It is not a de Polignac number, because 128140816407 - 2³ = 128140816399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128140816417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1599058 + ... + 1677279.

It is an arithmetic number, because the mean of its divisors is an integer number (21358447422).

Almost surely, 2^128140816407 is an apocalyptic number.

128140816407 is a deficient number, since it is larger than the sum of its proper divisors (42726762969).

128140816407 is a wasteful number, since it uses less digits than its factorization.

128140816407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3289377.

The product of its (nonzero) digits is 86016, while the sum is 42.

The spelling of 128140816407 in words is "one hundred twenty-eight billion, one hundred forty million, eight hundred sixteen thousand, four hundred seven".