12662306542 has 16 divisors (see below), whose sum is σ = 19257784272. Its totient is φ = 6243082560.

The previous prime is 12662306539. The next prime is 12662306543. The reversal of 12662306542 is 24560326621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12662306543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1289692 + ... + 1299472.

It is an arithmetic number, because the mean of its divisors is an integer number (1203611517).

Almost surely, 2^12662306542 is an apocalyptic number.

12662306542 is a deficient number, since it is larger than the sum of its proper divisors (6595477730).

12662306542 is an equidigital number, since it uses as much as digits as its factorization.

12662306542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18723.

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 12662306542 in words is "twelve billion, six hundred sixty-two million, three hundred six thousand, five hundred forty-two".