128107320798080 has 512 divisors, whose sum is σ = 370693217664000. Its totient is φ = 41866425925632.

The previous prime is 128107320798007. The next prime is 128107320798091. The reversal of 128107320798080 is 80897023701821.

It is a super-2 number, since 2×128107320798080² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 155931416 + ... + 156750824.

It is an arithmetic number, because the mean of its divisors is an integer number (724010190750).

Almost surely, 2^{128107320798080} is an apocalyptic number.

128107320798080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128107320798080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185346608832000).

128107320798080 is an abundant number, since it is smaller than the sum of its proper divisors (242585896865920).

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

128107320798080 is a wasteful number, since it uses less digits than its factorization.

128107320798080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819526 (or 819514 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 56.

The spelling of 128107320798080 in words is "one hundred twenty-eight trillion, one hundred seven billion, three hundred twenty million, seven hundred ninety-eight thousand, eighty".