51210544362121 has 16 divisors (see below), whose sum is σ = 51932700485568. Its totient is φ = 50490992059200.

The previous prime is 51210544362083. The next prime is 51210544362161. The reversal of 51210544362121 is 12126344501215.

It is a cyclic number.

It is not a de Polignac number, because 51210544362121 - 2¹⁵ = 51210544329353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51210544362161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83989126 + ... + 84596656.

It is an arithmetic number, because the mean of its divisors is an integer number (3245793780348).

Almost surely, 2^{51210544362121} is an apocalyptic number.

It is an amenable number.

51210544362121 is a deficient number, since it is larger than the sum of its proper divisors (722156123447).

51210544362121 is a wasteful number, since it uses less digits than its factorization.

51210544362121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609672.

The product of its (nonzero) digits is 57600, while the sum is 37.

Adding to 51210544362121 its reverse (12126344501215), we get a palindrome (63336888863336).

The spelling of 51210544362121 in words is "fifty-one trillion, two hundred ten billion, five hundred forty-four million, three hundred sixty-two thousand, one hundred twenty-one".