654401313440401 has 4 divisors (see below), whose sum is σ = 654401364831972. Its totient is φ = 654401262048832.

The previous prime is 654401313440359. The next prime is 654401313440417. The reversal of 654401313440401 is 104044313104456.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 630180741766801 + 24220571673600 = 25103401^2 + 4921440^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-654401313440401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (654401313440101) 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, 9213045 + ... + 37332061.

It is an arithmetic number, because the mean of its divisors is an integer number (163600341207993).

Almost surely, 2^{654401313440401} is an apocalyptic number.

It is an amenable number.

654401313440401 is a deficient number, since it is larger than the sum of its proper divisors (51391571).

654401313440401 is a wasteful number, since it uses less digits than its factorization.

654401313440401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51391570.

The product of its (nonzero) digits is 276480, while the sum is 40.

Adding to 654401313440401 its reverse (104044313104456), we get a palindrome (758445626544857).

The spelling of 654401313440401 in words is "six hundred fifty-four trillion, four hundred one billion, three hundred thirteen million, four hundred forty thousand, four hundred one".