127155381534720 has 3808 divisors, whose sum is σ = 591489793327104. Its totient is φ = 25454916403200.

The previous prime is 127155381534703. The next prime is 127155381534733. The reversal of 127155381534720 is 27435183551721.

127155381534720 is a `hidden beast` number, since 1 + 2 + 7 + 1 + 5 + 5 + 3 + 81 + 534 + 7 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 570203504529 + ... + 570203504751.

Almost surely, 2^{127155381534720} is an apocalyptic number.

127155381534720 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 127155381534720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295744896663552).

127155381534720 is an abundant number, since it is smaller than the sum of its proper divisors (464334411792384).

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

127155381534720 is an frugal number, since it uses more digits than its factorization.

127155381534720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327 (or 282 counting only the distinct ones).

The product of its (nonzero) digits is 7056000, while the sum is 54.

The spelling of 127155381534720 in words is "one hundred twenty-seven trillion, one hundred fifty-five billion, three hundred eighty-one million, five hundred thirty-four thousand, seven hundred twenty".