12776735544 has 16 divisors (see below), whose sum is σ = 31941838920. Its totient is φ = 4258911840.

The previous prime is 12776735527. The next prime is 12776735597. The reversal of 12776735544 is 44553767721.

12776735544 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12776735544² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 266181967 + ... + 266182014.

Almost surely, 2^12776735544 is an apocalyptic number.

It is an amenable number.

12776735544 is an abundant number, since it is smaller than the sum of its proper divisors (19165103376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12776735544 is a wasteful number, since it uses less digits than its factorization.

12776735544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532363990 (or 532363986 counting only the distinct ones).

The product of its digits is 4939200, while the sum is 51.

The spelling of 12776735544 in words is "twelve billion, seven hundred seventy-six million, seven hundred thirty-five thousand, five hundred forty-four".