127438555000 has 80 divisors (see below), whose sum is σ = 298761459480. Its totient is φ = 50945904000.

The previous prime is 127438554899. The next prime is 127438555001. The reversal of 127438555000 is 555834721.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127438555001) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9978619 + ... + 9991381.

Almost surely, 2^127438555000 is an apocalyptic number.

127438555000 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 127438555000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149380729740).

127438555000 is an abundant number, since it is smaller than the sum of its proper divisors (171322904480).

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

127438555000 is a wasteful number, since it uses less digits than its factorization.

127438555000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14786 (or 14767 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 40.

The spelling of 127438555000 in words is "one hundred twenty-seven billion, four hundred thirty-eight million, five hundred fifty-five thousand".