127215707388 has 96 divisors (see below), whose sum is σ = 370384562688. Its totient is φ = 33016032000.

The previous prime is 127215707383. The next prime is 127215707441. The reversal of 127215707388 is 883707512721.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 127215707388.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127215707383) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1087338 + ... + 1198638.

It is an arithmetic number, because the mean of its divisors is an integer number (3858172528).

Almost surely, 2^127215707388 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 127215707388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185192281344).

127215707388 is an abundant number, since it is smaller than the sum of its proper divisors (243168855300).

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

127215707388 is a wasteful number, since it uses less digits than its factorization.

127215707388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112563 (or 112561 counting only the distinct ones).

The product of its (nonzero) digits is 1317120, while the sum is 51.

The spelling of 127215707388 in words is "one hundred twenty-seven billion, two hundred fifteen million, seven hundred seven thousand, three hundred eighty-eight".