127780632853 has 4 divisors (see below), whose sum is σ = 129875397388. Its totient is φ = 125685868320.

The previous prime is 127780632809. The next prime is 127780632871. The reversal of 127780632853 is 358236087721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 358236087721 = 166571 ⋅2150651.

It can be written as a sum of positive squares in 2 ways, for example, as 39409396324 + 88371236529 = 198518^2 + 297273^2 .

It is a cyclic number.

It is not a de Polignac number, because 127780632853 - 2³³ = 119190698261 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 127780632853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127780632883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1047382176 + ... + 1047382297.

It is an arithmetic number, because the mean of its divisors is an integer number (32468849347).

Almost surely, 2^127780632853 is an apocalyptic number.

It is an amenable number.

127780632853 is a deficient number, since it is larger than the sum of its proper divisors (2094764535).

127780632853 is an equidigital number, since it uses as much as digits as its factorization.

127780632853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2094764534.

The product of its (nonzero) digits is 3386880, while the sum is 52.

The spelling of 127780632853 in words is "one hundred twenty-seven billion, seven hundred eighty million, six hundred thirty-two thousand, eight hundred fifty-three".