12745769552 has 10 divisors (see below), whose sum is σ = 24694928538. Its totient is φ = 6372884768.

The previous prime is 12745769521. The next prime is 12745769557. The reversal of 12745769552 is 25596754721.

It can be written as a sum of positive squares in only one way, i.e., 11354181136 + 1391588416 = 106556^2 + 37304^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12745769494 and 12745769503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12745769557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 398305283 + ... + 398305314.

Almost surely, 2^12745769552 is an apocalyptic number.

It is an amenable number.

12745769552 is a deficient number, since it is larger than the sum of its proper divisors (11949158986).

12745769552 is an equidigital number, since it uses as much as digits as its factorization.

12745769552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796610605 (or 796610599 counting only the distinct ones).

The product of its digits is 5292000, while the sum is 53.

The spelling of 12745769552 in words is "twelve billion, seven hundred forty-five million, seven hundred sixty-nine thousand, five hundred fifty-two".