12806533762 has 36 divisors (see below), whose sum is σ = 21643150914. Its totient is φ = 5678992000.

The previous prime is 12806533679. The next prime is 12806533769. The reversal of 12806533762 is 26733560821.

It can be written as a sum of positive squares in 3 ways, for example, as 1466200681 + 11340333081 = 38291^2 + 106491^2 .

It is not an unprimeable number, because it can be changed into a prime (12806533769) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 391062 + ... + 422542.

Almost surely, 2^12806533762 is an apocalyptic number.

12806533762 is a deficient number, since it is larger than the sum of its proper divisors (8836617152).

12806533762 is a wasteful number, since it uses less digits than its factorization.

12806533762 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31587 (or 31535 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 12806533762 in words is "twelve billion, eight hundred six million, five hundred thirty-three thousand, seven hundred sixty-two".