128759850552 has 128 divisors (see below), whose sum is σ = 344286365760. Its totient is φ = 39987118080.

The previous prime is 128759850529. The next prime is 128759850553. The reversal of 128759850552 is 255058957821.

It is a happy number.

It is a super-2 number, since 2×128759850552² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 128759850492 and 128759850501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128759850553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55000902 + ... + 55003242.

Almost surely, 2^128759850552 is an apocalyptic number.

128759850552 is a gapful number since it is divisible by the number (12) 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 128759850552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172143182880).

128759850552 is an abundant number, since it is smaller than the sum of its proper divisors (215526515208).

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

128759850552 is a wasteful number, since it uses less digits than its factorization.

128759850552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3673 (or 3669 counting only the distinct ones).

The product of its (nonzero) digits is 10080000, while the sum is 57.

The spelling of 128759850552 in words is "one hundred twenty-eight billion, seven hundred fifty-nine million, eight hundred fifty thousand, five hundred fifty-two".