12440201461 has 2 divisors, whose sum is σ = 12440201462. Its totient is φ = 12440201460.

The previous prime is 12440201441. The next prime is 12440201471. The reversal of 12440201461 is 16410204421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11481122500 + 959078961 = 107150^2 + 30969^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12440201461 is a prime.

It is a super-2 number, since 2×12440201461² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12440201441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6220100730 + 6220100731.

It is an arithmetic number, because the mean of its divisors is an integer number (6220100731).

Almost surely, 2^12440201461 is an apocalyptic number.

It is an amenable number.

12440201461 is a deficient number, since it is larger than the sum of its proper divisors (1).

12440201461 is an equidigital number, since it uses as much as digits as its factorization.

12440201461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 12440201461 its reverse (16410204421), we get a palindrome (28850405882).

The spelling of 12440201461 in words is "twelve billion, four hundred forty million, two hundred one thousand, four hundred sixty-one".