12420260156566 has 8 divisors (see below), whose sum is σ = 18630411060240. Its totient is φ = 6210123136488.

The previous prime is 12420260156543. The next prime is 12420260156567. The reversal of 12420260156566 is 66565106202421.

12420260156566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12420260156567) 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, 833626 + ... + 5053261.

It is an arithmetic number, because the mean of its divisors is an integer number (2328801382530).

Almost surely, 2^{12420260156566} is an apocalyptic number.

12420260156566 is a deficient number, since it is larger than the sum of its proper divisors (6210150903674).

12420260156566 is a wasteful number, since it uses less digits than its factorization.

12420260156566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6941798.

The product of its (nonzero) digits is 1036800, while the sum is 46.

Adding to 12420260156566 its reverse (66565106202421), we get a palindrome (78985366358987).

The spelling of 12420260156566 in words is "twelve trillion, four hundred twenty billion, two hundred sixty million, one hundred fifty-six thousand, five hundred sixty-six".