12563437316 has 12 divisors (see below), whose sum is σ = 21989689932. Its totient is φ = 6280668768.

The previous prime is 12563437309. The next prime is 12563437321. The reversal of 12563437316 is 61373436521.

It can be written as a sum of positive squares in 2 ways, for example, as 5579492416 + 6983944900 = 74696^2 + 83570^2 .

It is a super-2 number, since 2×12563437316² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235235 + ... + 283658.

It is an arithmetic number, because the mean of its divisors is an integer number (1832474161).

Almost surely, 2^12563437316 is an apocalyptic number.

It is an amenable number.

12563437316 is a deficient number, since it is larger than the sum of its proper divisors (9426252616).

12563437316 is a wasteful number, since it uses less digits than its factorization.

12563437316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524950 (or 524948 counting only the distinct ones).

The product of its digits is 272160, while the sum is 41.

The spelling of 12563437316 in words is "twelve billion, five hundred sixty-three million, four hundred thirty-seven thousand, three hundred sixteen".