127280133440 has 112 divisors (see below), whose sum is σ = 304750207872. Its totient is φ = 50633189376.

The previous prime is 127280133433. The next prime is 127280133443. The reversal of 127280133440 is 44331082721.

It is a self number, because there is not a number n which added to its sum of digits gives 127280133440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127280133443) 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, 79698722 + ... + 79700318.

Almost surely, 2^127280133440 is an apocalyptic number.

127280133440 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 127280133440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152375103936).

127280133440 is an abundant number, since it is smaller than the sum of its proper divisors (177470074432).

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

127280133440 is a wasteful number, since it uses less digits than its factorization.

127280133440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2824 (or 2814 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The spelling of 127280133440 in words is "one hundred twenty-seven billion, two hundred eighty million, one hundred thirty-three thousand, four hundred forty".