128795187718 has 8 divisors (see below), whose sum is σ = 194021935848. Its totient is φ = 64121209104.

The previous prime is 128795187637. The next prime is 128795187727. The reversal of 128795187718 is 817781597821.

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

It is a self number, because there is not a number n which added to its sum of digits gives 128795187718.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138191796 + ... + 138192727.

It is an arithmetic number, because the mean of its divisors is an integer number (24252741981).

Almost surely, 2^128795187718 is an apocalyptic number.

128795187718 is a deficient number, since it is larger than the sum of its proper divisors (65226748130).

128795187718 is a wasteful number, since it uses less digits than its factorization.

128795187718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276384758.

The product of its digits is 15805440, while the sum is 64.

The spelling of 128795187718 in words is "one hundred twenty-eight billion, seven hundred ninety-five million, one hundred eighty-seven thousand, seven hundred eighteen".