127856863007 has 4 divisors (see below), whose sum is σ = 128223215400. Its totient is φ = 127490510616.

The previous prime is 127856862961. The next prime is 127856863019. The reversal of 127856863007 is 700368658721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 700368658721 = 67 ⋅10453263563.

It is a cyclic number.

It is not a de Polignac number, because 127856863007 - 2⁸ = 127856862751 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 127856863007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127856863307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183175673 + ... + 183176370.

It is an arithmetic number, because the mean of its divisors is an integer number (32055803850).

Almost surely, 2^127856863007 is an apocalyptic number.

127856863007 is a deficient number, since it is larger than the sum of its proper divisors (366352393).

127856863007 is an equidigital number, since it uses as much as digits as its factorization.

127856863007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366352392.

The product of its (nonzero) digits is 3386880, while the sum is 53.

The spelling of 127856863007 in words is "one hundred twenty-seven billion, eight hundred fifty-six million, eight hundred sixty-three thousand, seven".