12776305550 has 48 divisors (see below), whose sum is σ = 24055460352. Its totient is φ = 5048191200.

The previous prime is 12776305523. The next prime is 12776305567. The reversal of 12776305550 is 5550367721.

It is a junction number, because it is equal to n+sod(n) for n = 12776305498 and 12776305507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1456277 + ... + 1465023.

It is an arithmetic number, because the mean of its divisors is an integer number (501155424).

Almost surely, 2^12776305550 is an apocalyptic number.

12776305550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12776305550 is a deficient number, since it is larger than the sum of its proper divisors (11279154802).

12776305550 is a wasteful number, since it uses less digits than its factorization.

12776305550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9113 (or 9108 counting only the distinct ones).

The product of its (nonzero) digits is 220500, while the sum is 41.

The spelling of 12776305550 in words is "twelve billion, seven hundred seventy-six million, three hundred five thousand, five hundred fifty".