128358728269780 has 96 divisors (see below), whose sum is σ = 274025153267712. Its totient is φ = 50500442179200.

The previous prime is 128358728269753. The next prime is 128358728269831. The reversal of 128358728269780 is 87962827853821.

It is a super-2 number, since 2×128358728269780² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 128358728269697 and 128358728269706.

It is a congruent number.

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, 151403665 + ... + 152249095.

It is an arithmetic number, because the mean of its divisors is an integer number (2854428679872).

Almost surely, 2^{128358728269780} is an apocalyptic number.

128358728269780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128358728269780 is an abundant number, since it is smaller than the sum of its proper divisors (145666424997932).

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

128358728269780 is a wasteful number, since it uses less digits than its factorization.

128358728269780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846085 (or 846083 counting only the distinct ones).

The product of its (nonzero) digits is 1300561920, while the sum is 76.

The spelling of 128358728269780 in words is "one hundred twenty-eight trillion, three hundred fifty-eight billion, seven hundred twenty-eight million, two hundred sixty-nine thousand, seven hundred eighty".