126561244301233 has 16 divisors (see below), whose sum is σ = 146652615696384. Its totient is φ = 106980631188480.

The previous prime is 126561244301221. The next prime is 126561244301267. The reversal of 126561244301233 is 332103442165621.

It is a de Polignac number, because none of the positive numbers 2^k-126561244301233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126561244301233.

It is not an unprimeable number, because it can be changed into a prime (126561244301203) 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, 331470385 + ... + 331851982.

It is an arithmetic number, because the mean of its divisors is an integer number (9165788481024).

Almost surely, 2^{126561244301233} is an apocalyptic number.

It is an amenable number.

126561244301233 is a deficient number, since it is larger than the sum of its proper divisors (20091371395151).

126561244301233 is an equidigital number, since it uses as much as digits as its factorization.

126561244301233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663322752.

The product of its (nonzero) digits is 622080, while the sum is 43.

Adding to 126561244301233 its reverse (332103442165621), we get a palindrome (458664686466854).

The spelling of 126561244301233 in words is "one hundred twenty-six trillion, five hundred sixty-one billion, two hundred forty-four million, three hundred one thousand, two hundred thirty-three".