12640230506 has 8 divisors (see below), whose sum is σ = 18960830784. Its totient is φ = 6319953580.

The previous prime is 12640230467. The next prime is 12640230509. The reversal of 12640230506 is 60503204621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12640230509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84641 + ... + 180123.

It is an arithmetic number, because the mean of its divisors is an integer number (2370103848).

Almost surely, 2^12640230506 is an apocalyptic number.

12640230506 is a deficient number, since it is larger than the sum of its proper divisors (6320600278).

12640230506 is an equidigital number, since it uses as much as digits as its factorization.

12640230506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161676.

The product of its (nonzero) digits is 8640, while the sum is 29.

The spelling of 12640230506 in words is "twelve billion, six hundred forty million, two hundred thirty thousand, five hundred six".