127571981660 has 12 divisors (see below), whose sum is σ = 267901161528. Its totient is φ = 51028792656.

The previous prime is 127571981659. The next prime is 127571981681. The reversal of 127571981660 is 66189175721.

It is a super-2 number, since 2×127571981660² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3189299522 + ... + 3189299561.

It is an arithmetic number, because the mean of its divisors is an integer number (22325096794).

Almost surely, 2^127571981660 is an apocalyptic number.

127571981660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

127571981660 is an abundant number, since it is smaller than the sum of its proper divisors (140329179868).

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

127571981660 is a wasteful number, since it uses less digits than its factorization.

127571981660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6378599092 (or 6378599090 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 53.

The spelling of 127571981660 in words is "one hundred twenty-seven billion, five hundred seventy-one million, nine hundred eighty-one thousand, six hundred sixty".