128375467818 has 32 divisors (see below), whose sum is σ = 276529344000. Its totient is φ = 39496095936.

The previous prime is 128375467783. The next prime is 128375467841. The reversal of 128375467818 is 818764573821.

It is a super-2 number, since 2×128375467818² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 731988 + ... + 890256.

It is an arithmetic number, because the mean of its divisors is an integer number (8641542000).

Almost surely, 2^128375467818 is an apocalyptic number.

128375467818 is an abundant number, since it is smaller than the sum of its proper divisors (148153876182).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128375467818 is a wasteful number, since it uses less digits than its factorization.

128375467818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168686.

The product of its digits is 18063360, while the sum is 60.

The spelling of 128375467818 in words is "one hundred twenty-eight billion, three hundred seventy-five million, four hundred sixty-seven thousand, eight hundred eighteen".