127778957683 has 6 divisors (see below), whose sum is σ = 138364196964. Its totient is φ = 117949806936.

The previous prime is 127778957651. The next prime is 127778957689. The reversal of 127778957683 is 386759877721.

It is not a de Polignac number, because 127778957683 - 2⁵ = 127778957651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127778957689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 378044085 + ... + 378044422.

It is an arithmetic number, because the mean of its divisors is an integer number (23060699494).

Almost surely, 2^127778957683 is an apocalyptic number.

127778957683 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

127778957683 is a deficient number, since it is larger than the sum of its proper divisors (10585239281).

127778957683 is an equidigital number, since it uses as much as digits as its factorization.

127778957683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756088533 (or 756088520 counting only the distinct ones).

The product of its digits is 248935680, while the sum is 70.

The spelling of 127778957683 in words is "one hundred twenty-seven billion, seven hundred seventy-eight million, nine hundred fifty-seven thousand, six hundred eighty-three".