131242600666 has 16 divisors (see below), whose sum is σ = 197419226400. Its totient is φ = 65436452368.

The previous prime is 131242600661. The next prime is 131242600679. The reversal of 131242600666 is 666006242131.

It is not an unprimeable number, because it can be changed into a prime (131242600661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 954405 + ... + 1083223.

It is an arithmetic number, because the mean of its divisors is an integer number (12338701650).

Almost surely, 2^131242600666 is an apocalyptic number.

131242600666 is a deficient number, since it is larger than the sum of its proper divisors (66176625734).

131242600666 is a wasteful number, since it uses less digits than its factorization.

131242600666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130253.

The product of its (nonzero) digits is 62208, while the sum is 37.

Adding to 131242600666 its reverse (666006242131), we get a palindrome (797248842797).

The spelling of 131242600666 in words is "one hundred thirty-one billion, two hundred forty-two million, six hundred thousand, six hundred sixty-six".