12662637903 has 24 divisors (see below), whose sum is σ = 19095258000. Its totient is φ = 8385078528.

The previous prime is 12662637899. The next prime is 12662637917. The reversal of 12662637903 is 30973626621.

12662637903 is a `hidden beast` number, since 1 + 2 + 6 + 6 + 2 + 637 + 9 + 0 + 3 = 666.

It is not a de Polignac number, because 12662637903 - 2² = 12662637899 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12662637973) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 138658 + ... + 211071.

It is an arithmetic number, because the mean of its divisors is an integer number (795635750).

Almost surely, 2^12662637903 is an apocalyptic number.

12662637903 is a deficient number, since it is larger than the sum of its proper divisors (6432620097).

12662637903 is an equidigital number, since it uses as much as digits as its factorization.

12662637903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349893 (or 349881 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 45.

The spelling of 12662637903 in words is "twelve billion, six hundred sixty-two million, six hundred thirty-seven thousand, nine hundred three".