127945703640 has 256 divisors, whose sum is σ = 417593594880. Its totient is φ = 31273482240.

The previous prime is 127945703623. The next prime is 127945703659. The reversal of 127945703640 is 46307549721.

It is a self number, because there is not a number n which added to its sum of digits gives 127945703640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6279870 + ... + 6300210.

It is an arithmetic number, because the mean of its divisors is an integer number (1631224980).

Almost surely, 2^127945703640 is an apocalyptic number.

127945703640 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 127945703640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208796797440).

127945703640 is an abundant number, since it is smaller than the sum of its proper divisors (289647891240).

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

127945703640 is a wasteful number, since it uses less digits than its factorization.

127945703640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20474 (or 20470 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 48.

The spelling of 127945703640 in words is "one hundred twenty-seven billion, nine hundred forty-five million, seven hundred three thousand, six hundred forty".