127989185056 has 48 divisors (see below), whose sum is σ = 256164340320. Its totient is φ = 62940188160.

The previous prime is 127989184991. The next prime is 127989185057. The reversal of 127989185056 is 650581989721.

It is a junction number, because it is equal to n+sod(n) for n = 127989184985 and 127989185003.

It is not an unprimeable number, because it can be changed into a prime (127989185057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341476 + ... + 610396.

It is an arithmetic number, because the mean of its divisors is an integer number (5336757090).

Almost surely, 2^127989185056 is an apocalyptic number.

127989185056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

127989185056 is an abundant number, since it is smaller than the sum of its proper divisors (128175155264).

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

127989185056 is a wasteful number, since it uses less digits than its factorization.

127989185056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269177 (or 269169 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 61.

The spelling of 127989185056 in words is "one hundred twenty-seven billion, nine hundred eighty-nine million, one hundred eighty-five thousand, fifty-six".