128665527248268 has 48 divisors (see below), whose sum is σ = 351133992496000. Its totient is φ = 40631219130384.

The previous prime is 128665527248227. The next prime is 128665527248311. The reversal of 128665527248268 is 862842725566821.

128665527248268 is a `hidden beast` number, since 1 + 2 + 8 + 6 + 6 + 55 + 272 + 48 + 268 = 666.

It is a super-2 number, since 2×128665527248268² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 128665527248196 and 128665527248205.

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, 31351247278 + ... + 31351251381.

Almost surely, 2^{128665527248268} is an apocalyptic number.

128665527248268 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

128665527248268 is an abundant number, since it is smaller than the sum of its proper divisors (222468465247732).

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

128665527248268 is a wasteful number, since it uses less digits than its factorization.

128665527248268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62702498691 (or 62702498683 counting only the distinct ones).

The product of its digits is 1238630400, while the sum is 72.

The spelling of 128665527248268 in words is "one hundred twenty-eight trillion, six hundred sixty-five billion, five hundred twenty-seven million, two hundred forty-eight thousand, two hundred sixty-eight".