128212525716 has 48 divisors (see below), whose sum is σ = 327473108928. Its totient is φ = 38719667200.

The previous prime is 128212525667. The next prime is 128212525717. The reversal of 128212525716 is 617525212821.

It is a super-2 number, since 2×128212525716² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128212525717) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1618845 + ... + 1696196.

It is an arithmetic number, because the mean of its divisors is an integer number (6822356436).

Almost surely, 2^128212525716 is an apocalyptic number.

It is an amenable number.

128212525716 is an abundant number, since it is smaller than the sum of its proper divisors (199260583212).

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

128212525716 is a wasteful number, since it uses less digits than its factorization.

128212525716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3315352 (or 3315350 counting only the distinct ones).

The product of its digits is 134400, while the sum is 42.

The spelling of 128212525716 in words is "one hundred twenty-eight billion, two hundred twelve million, five hundred twenty-five thousand, seven hundred sixteen".