127731562380 has 144 divisors (see below), whose sum is σ = 405014937600. Its totient is φ = 32545618560.

The previous prime is 127731562367. The next prime is 127731562397. The reversal of 127731562380 is 83265137721.

127731562380 is a `hidden beast` number, since 1 + 2 + 7 + 7 + 3 + 1 + 562 + 3 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 47 ways as a sum of consecutive naturals, for example, 295941 + ... + 585699.

Almost surely, 2^127731562380 is an apocalyptic number.

127731562380 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 127731562380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202507468800).

127731562380 is an abundant number, since it is smaller than the sum of its proper divisors (277283375220).

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

127731562380 is a wasteful number, since it uses less digits than its factorization.

127731562380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289884 (or 289879 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The spelling of 127731562380 in words is "one hundred twenty-seven billion, seven hundred thirty-one million, five hundred sixty-two thousand, three hundred eighty".