128812743806 has 8 divisors (see below), whose sum is σ = 193220944344. Its totient is φ = 64405762360.

The previous prime is 128812743701. The next prime is 128812743809. The reversal of 128812743806 is 608347218821.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128812743809) 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, 35261 + ... + 508791.

It is an arithmetic number, because the mean of its divisors is an integer number (24152618043).

Almost surely, 2^128812743806 is an apocalyptic number.

128812743806 is a deficient number, since it is larger than the sum of its proper divisors (64408200538).

128812743806 is a wasteful number, since it uses less digits than its factorization.

128812743806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609546.

The product of its (nonzero) digits is 1032192, while the sum is 50.

The spelling of 128812743806 in words is "one hundred twenty-eight billion, eight hundred twelve million, seven hundred forty-three thousand, eight hundred six".