127775020640 has 96 divisors (see below), whose sum is σ = 318789063936. Its totient is φ = 48298708480.

The previous prime is 127775020613. The next prime is 127775020657. The reversal of 127775020640 is 46020577721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96275 + ... + 514605.

It is an arithmetic number, because the mean of its divisors is an integer number (3320719416).

Almost surely, 2^127775020640 is an apocalyptic number.

127775020640 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 127775020640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159394531968).

127775020640 is an abundant number, since it is smaller than the sum of its proper divisors (191014043296).

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

127775020640 is a wasteful number, since it uses less digits than its factorization.

127775020640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418452 (or 418444 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 41.

The spelling of 127775020640 in words is "one hundred twenty-seven billion, seven hundred seventy-five million, twenty thousand, six hundred forty".