12640231141 has 16 divisors (see below), whose sum is σ = 13359012480. Its totient is φ = 11935982080.

The previous prime is 12640231129. The next prime is 12640231159. The reversal of 12640231141 is 14113204621.

It is a cyclic number.

It is not a de Polignac number, because 12640231141 - 2¹¹ = 12640229093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12640231181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1393581 + ... + 1402621.

It is an arithmetic number, because the mean of its divisors is an integer number (834938280).

Almost surely, 2^12640231141 is an apocalyptic number.

It is an amenable number.

12640231141 is a deficient number, since it is larger than the sum of its proper divisors (718781339).

12640231141 is an equidigital number, since it uses as much as digits as its factorization.

12640231141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9836.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 12640231141 its reverse (14113204621), we get a palindrome (26753435762).

The spelling of 12640231141 in words is "twelve billion, six hundred forty million, two hundred thirty-one thousand, one hundred forty-one".