128495670852 has 12 divisors (see below), whose sum is σ = 299823232016. Its totient is φ = 42831890280.

The previous prime is 128495670799. The next prime is 128495670859. The reversal of 128495670852 is 258076594821.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×128495670852² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 128495670792 and 128495670801.

It is not an unprimeable number, because it can be changed into a prime (128495670859) 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 3 ways as a sum of consecutive naturals, for example, 5353986274 + ... + 5353986297.

Almost surely, 2^128495670852 is an apocalyptic number.

128495670852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128495670852 is an abundant number, since it is smaller than the sum of its proper divisors (171327561164).

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

128495670852 is a wasteful number, since it uses less digits than its factorization.

128495670852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10707972578 (or 10707972576 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 57.

The spelling of 128495670852 in words is "one hundred twenty-eight billion, four hundred ninety-five million, six hundred seventy thousand, eight hundred fifty-two".