6401431402241 has 4 divisors (see below), whose sum is σ = 6401510170692. Its totient is φ = 6401352633792.

The previous prime is 6401431402187. The next prime is 6401431402253. The reversal of 6401431402241 is 1422041341046.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4006662772225 + 2394768630016 = 2001665^2 + 1547504^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6401431402241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6401431402198 and 6401431402207.

It is not an unprimeable number, because it can be changed into a prime (6401431402441) 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, 39262196 + ... + 39424901.

It is an arithmetic number, because the mean of its divisors is an integer number (1600377542673).

Almost surely, 2^{6401431402241} is an apocalyptic number.

It is an amenable number.

6401431402241 is a deficient number, since it is larger than the sum of its proper divisors (78768451).

6401431402241 is an equidigital number, since it uses as much as digits as its factorization.

6401431402241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78768450.

The product of its (nonzero) digits is 18432, while the sum is 32.

Adding to 6401431402241 its reverse (1422041341046), we get a palindrome (7823472743287).

The spelling of 6401431402241 in words is "six trillion, four hundred one billion, four hundred thirty-one million, four hundred two thousand, two hundred forty-one".