128793019718 has 16 divisors (see below), whose sum is σ = 210766026240. Its totient is φ = 58538445000.

The previous prime is 128793019717. The next prime is 128793019739. The reversal of 128793019718 is 817910397821.

It is a happy number.

It is a super-2 number, since 2×128793019718² (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 (128793019717) 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, 166343 + ... + 534093.

It is an arithmetic number, because the mean of its divisors is an integer number (13172876640).

Almost surely, 2^128793019718 is an apocalyptic number.

128793019718 is a deficient number, since it is larger than the sum of its proper divisors (81973006522).

128793019718 is a wasteful number, since it uses less digits than its factorization.

128793019718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383683.

The product of its (nonzero) digits is 1524096, while the sum is 56.

The spelling of 128793019718 in words is "one hundred twenty-eight billion, seven hundred ninety-three million, nineteen thousand, seven hundred eighteen".