20400401341241 has 4 divisors (see below), whose sum is σ = 20400579108852. Its totient is φ = 20400223573632.

The previous prime is 20400401341237. The next prime is 20400401341279. The reversal of 20400401341241 is 14214310400402.

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 5364782440000 + 15035618901241 = 2316200^2 + 3877579^2 .

It is a cyclic number.

It is not a de Polignac number, because 20400401341241 - 2² = 20400401341237 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20400401341241.

It is not an unprimeable number, because it can be changed into a prime (20400401341141) 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, 88711556 + ... + 88941221.

It is an arithmetic number, because the mean of its divisors is an integer number (5100144777213).

Almost surely, 2^{20400401341241} is an apocalyptic number.

It is an amenable number.

20400401341241 is a deficient number, since it is larger than the sum of its proper divisors (177767611).

20400401341241 is a wasteful number, since it uses less digits than its factorization.

20400401341241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177767610.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 20400401341241 its reverse (14214310400402), we get a palindrome (34614711741643).

The spelling of 20400401341241 in words is "twenty trillion, four hundred billion, four hundred one million, three hundred forty-one thousand, two hundred forty-one".