127773679808 has 28 divisors (see below), whose sum is σ = 256760411040. Its totient is φ = 63078143232.

The previous prime is 127773679801. The next prime is 127773679841. The reversal of 127773679808 is 808976377721.

It is a super-2 number, since 2×127773679808² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (127773679801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12630791 + ... + 12640902.

It is an arithmetic number, because the mean of its divisors is an integer number (9170014680).

Almost surely, 2^127773679808 is an apocalyptic number.

It is an amenable number.

127773679808 is an abundant number, since it is smaller than the sum of its proper divisors (128986731232).

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

127773679808 is an equidigital number, since it uses as much as digits as its factorization.

127773679808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25271784 (or 25271774 counting only the distinct ones).

The product of its (nonzero) digits is 49787136, while the sum is 65.

The spelling of 127773679808 in words is "one hundred twenty-seven billion, seven hundred seventy-three million, six hundred seventy-nine thousand, eight hundred eight".