128233178761 has 8 divisors (see below), whose sum is σ = 129500925984. Its totient is φ = 126966715200.

The previous prime is 128233178753. The next prime is 128233178797. The reversal of 128233178761 is 167871332821.

It is a happy number.

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 128233178761 - 2³ = 128233178753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128233178461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119515 + ... + 520336.

It is an arithmetic number, because the mean of its divisors is an integer number (16187615748).

Almost surely, 2^128233178761 is an apocalyptic number.

It is an amenable number.

128233178761 is a deficient number, since it is larger than the sum of its proper divisors (1267747223).

128233178761 is a wasteful number, since it uses less digits than its factorization.

128233178761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641831.

The product of its digits is 677376, while the sum is 49.

The spelling of 128233178761 in words is "one hundred twenty-eight billion, two hundred thirty-three million, one hundred seventy-eight thousand, seven hundred sixty-one".