127966839765 has 32 divisors (see below), whose sum is σ = 206274014976. Its totient is φ = 67740710400.

The previous prime is 127966839761. The next prime is 127966839859. The reversal of 127966839765 is 567938669721.

It is not a de Polignac number, because 127966839765 - 2² = 127966839761 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 127966839765.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127966839761) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2778969 + ... + 2824641.

It is an arithmetic number, because the mean of its divisors is an integer number (6446062968).

Almost surely, 2^127966839765 is an apocalyptic number.

127966839765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

127966839765 is a deficient number, since it is larger than the sum of its proper divisors (78307175211).

127966839765 is a wasteful number, since it uses less digits than its factorization.

127966839765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47069.

The product of its digits is 205752960, while the sum is 69.

The spelling of 127966839765 in words is "one hundred twenty-seven billion, nine hundred sixty-six million, eight hundred thirty-nine thousand, seven hundred sixty-five".