12776848557 has 16 divisors (see below), whose sum is σ = 18702887232. Its totient is φ = 7694219520.

The previous prime is 12776848537. The next prime is 12776848577. The reversal of 12776848557 is 75584867721.

It is an interprime number because it is at equal distance from previous prime (12776848537) and next prime (12776848577).

It is not a de Polignac number, because 12776848557 - 2⁷ = 12776848429 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12776848557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12776848517) 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, 1227868 + ... + 1238229.

It is an arithmetic number, because the mean of its divisors is an integer number (1168930452).

Almost surely, 2^12776848557 is an apocalyptic number.

It is an amenable number.

12776848557 is a deficient number, since it is larger than the sum of its proper divisors (5926038675).

12776848557 is a wasteful number, since it uses less digits than its factorization.

12776848557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2466268.

The product of its digits is 26342400, while the sum is 60.

The spelling of 12776848557 in words is "twelve billion, seven hundred seventy-six million, eight hundred forty-eight thousand, five hundred fifty-seven".