127791806679 has 16 divisors (see below), whose sum is σ = 189340323840. Its totient is φ = 85185929880.

The previous prime is 127791806669. The next prime is 127791806719. The reversal of 127791806679 is 976608197721.

It is not a de Polignac number, because 127791806679 - 2⁵ = 127791806647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127791806669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38944 + ... + 507050.

It is an arithmetic number, because the mean of its divisors is an integer number (11833770240).

Almost surely, 2^127791806679 is an apocalyptic number.

127791806679 is a deficient number, since it is larger than the sum of its proper divisors (61548517161).

127791806679 is a wasteful number, since it uses less digits than its factorization.

127791806679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478227 (or 478221 counting only the distinct ones).

The product of its (nonzero) digits is 16003008, while the sum is 63.

The spelling of 127791806679 in words is "one hundred twenty-seven billion, seven hundred ninety-one million, eight hundred six thousand, six hundred seventy-nine".