12557763508 has 12 divisors (see below), whose sum is σ = 22123577700. Its totient is φ = 6236741312.

The previous prime is 12557763503. The next prime is 12557763511. The reversal of 12557763508 is 80536775521.

It can be written as a sum of positive squares in 2 ways, for example, as 1919491344 + 10638272164 = 43812^2 + 103142^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12557763503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10534441 + ... + 10535632.

It is an arithmetic number, because the mean of its divisors is an integer number (1843631475).

Almost surely, 2^12557763508 is an apocalyptic number.

It is an amenable number.

12557763508 is a deficient number, since it is larger than the sum of its proper divisors (9565814192).

12557763508 is a wasteful number, since it uses less digits than its factorization.

12557763508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21070226 (or 21070224 counting only the distinct ones).

The product of its (nonzero) digits is 1764000, while the sum is 49.

The spelling of 12557763508 in words is "twelve billion, five hundred fifty-seven million, seven hundred sixty-three thousand, five hundred eight".