128283815765436 has 24 divisors (see below), whose sum is σ = 303429299392464. Its totient is φ = 42175501073280.

The previous prime is 128283815765431. The next prime is 128283815765437. The reversal of 128283815765436 is 634567518382821.

It is a super-3 number, since 3×128283815765436³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128283815765431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73221355155 + ... + 73221356906.

It is an arithmetic number, because the mean of its divisors is an integer number (12642887474686).

Almost surely, 2^{128283815765436} is an apocalyptic number.

It is an amenable number.

128283815765436 is an abundant number, since it is smaller than the sum of its proper divisors (175145483627028).

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

128283815765436 is a wasteful number, since it uses less digits than its factorization.

128283815765436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146442712141 (or 146442712139 counting only the distinct ones).

The product of its digits is 464486400, while the sum is 69.

The spelling of 128283815765436 in words is "one hundred twenty-eight trillion, two hundred eighty-three billion, eight hundred fifteen million, seven hundred sixty-five thousand, four hundred thirty-six".