12660213624250 has 16 divisors (see below), whose sum is σ = 23699919905064. Its totient is φ = 5064085449600.

The previous prime is 12660213624241. The next prime is 12660213624257. The reversal of 12660213624250 is 5242631206621.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4754933497561 + 7905280126689 = 2180581^2 + 2811633^2 .

It is not an unprimeable number, because it can be changed into a prime (12660213624257) 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, 25320426999 + ... + 25320427498.

Almost surely, 2^{12660213624250} is an apocalyptic number.

12660213624250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12660213624250 is a deficient number, since it is larger than the sum of its proper divisors (11039706280814).

12660213624250 is an equidigital number, since it uses as much as digits as its factorization.

12660213624250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50640854514 (or 50640854504 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 12660213624250 in words is "twelve trillion, six hundred sixty billion, two hundred thirteen million, six hundred twenty-four thousand, two hundred fifty".