12775545761 has 8 divisors (see below), whose sum is σ = 13937778624. Its totient is φ = 11613449520.

The previous prime is 12775545733. The next prime is 12775545763. The reversal of 12775545761 is 16754557721.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12775545761 - 2³⁰ = 11701803937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12775545763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333356 + ... + 369698.

It is an arithmetic number, because the mean of its divisors is an integer number (1742222328).

Almost surely, 2^12775545761 is an apocalyptic number.

12775545761 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12775545761 is a deficient number, since it is larger than the sum of its proper divisors (1162232863).

12775545761 is a wasteful number, since it uses less digits than its factorization.

12775545761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68311.

The product of its digits is 2058000, while the sum is 50.

The spelling of 12775545761 in words is "twelve billion, seven hundred seventy-five million, five hundred forty-five thousand, seven hundred sixty-one".