128178050429 has 8 divisors (see below), whose sum is σ = 150586800672. Its totient is φ = 107562000240.

The previous prime is 128178050383. The next prime is 128178050459. The reversal of 128178050429 is 924050871821.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128178050429 is a prime.

It is a super-2 number, since 2×128178050429² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128178050459) 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, 448174859 + ... + 448175144.

It is an arithmetic number, because the mean of its divisors is an integer number (18823350084).

Almost surely, 2^128178050429 is an apocalyptic number.

It is an amenable number.

128178050429 is a deficient number, since it is larger than the sum of its proper divisors (22408750243).

128178050429 is a wasteful number, since it uses less digits than its factorization.

128178050429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896350027.

The product of its (nonzero) digits is 322560, while the sum is 47.

The spelling of 128178050429 in words is "one hundred twenty-eight billion, one hundred seventy-eight million, fifty thousand, four hundred twenty-nine".