127779130663 has 4 divisors (see below), whose sum is σ = 127879037440. Its totient is φ = 127679223888.

The previous prime is 127779130603. The next prime is 127779130673. The reversal of 127779130663 is 366031977721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 366031977721 = 41843 ⋅8747747.

It is a cyclic number.

It is not a de Polignac number, because 127779130663 - 2²¹ = 127777033511 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 127779130663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127779130603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49951470 + ... + 49954027.

It is an arithmetic number, because the mean of its divisors is an integer number (31969759360).

Almost surely, 2^127779130663 is an apocalyptic number.

127779130663 is a deficient number, since it is larger than the sum of its proper divisors (99906777).

127779130663 is an equidigital number, since it uses as much as digits as its factorization.

127779130663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99906776.

The product of its (nonzero) digits is 2000376, while the sum is 52.

The spelling of 127779130663 in words is "one hundred twenty-seven billion, seven hundred seventy-nine million, one hundred thirty thousand, six hundred sixty-three".