128326252463688 has 128 divisors (see below), whose sum is σ = 324942264414720. Its totient is φ = 42228324311040.

The previous prime is 128326252463671. The next prime is 128326252463707. The reversal of 128326252463688 is 886364252623821.

It is a happy number.

It is a super-2 number, since 2×128326252463688² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2146217073 + ... + 2146276863.

It is an arithmetic number, because the mean of its divisors is an integer number (2538611440740).

Almost surely, 2^{128326252463688} is an apocalyptic number.

It is an amenable number.

128326252463688 is an abundant number, since it is smaller than the sum of its proper divisors (196616011951032).

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

128326252463688 is a wasteful number, since it uses less digits than its factorization.

128326252463688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63047 (or 63043 counting only the distinct ones).

The product of its digits is 318504960, while the sum is 66.

The spelling of 128326252463688 in words is "one hundred twenty-eight trillion, three hundred twenty-six billion, two hundred fifty-two million, four hundred sixty-three thousand, six hundred eighty-eight".