51410404042221 has 24 divisors (see below), whose sum is σ = 79747390067040. Its totient is φ = 29374130083872.

The previous prime is 51410404042181. The next prime is 51410404042223. The reversal of 51410404042221 is 12224040401415.

It is not a de Polignac number, because 51410404042221 - 2⁹ = 51410404041709 is a prime.

It is a super-2 number, since 2×51410404042221² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51410404042223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17971266 + ... + 20634611.

It is an arithmetic number, because the mean of its divisors is an integer number (3322807919460).

Almost surely, 2^{51410404042221} is an apocalyptic number.

It is an amenable number.

51410404042221 is a deficient number, since it is larger than the sum of its proper divisors (28336986024819).

51410404042221 is a wasteful number, since it uses less digits than its factorization.

51410404042221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38614953 (or 38614946 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 30.

Adding to 51410404042221 its reverse (12224040401415), we get a palindrome (63634444443636).

The spelling of 51410404042221 in words is "fifty-one trillion, four hundred ten billion, four hundred four million, forty-two thousand, two hundred twenty-one".