127983631503 has 80 divisors (see below), whose sum is σ = 215849541600. Its totient is φ = 67047466752.

The previous prime is 127983631499. The next prime is 127983631511. The reversal of 127983631503 is 305136389721.

It is a Cunningham number, because it is equal to 357748²-1.

It is not a de Polignac number, because 127983631503 - 2² = 127983631499 is a prime.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127983635503) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 13947625 + ... + 13956797.

It is an arithmetic number, because the mean of its divisors is an integer number (2698119270).

Almost surely, 2^127983631503 is an apocalyptic number.

127983631503 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

127983631503 is a deficient number, since it is larger than the sum of its proper divisors (87865910097).

127983631503 is an equidigital number, since it uses as much as digits as its factorization.

127983631503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9366 (or 9345 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 48.

The spelling of 127983631503 in words is "one hundred twenty-seven billion, nine hundred eighty-three million, six hundred thirty-one thousand, five hundred three".