51105425120653 has 2 divisors, whose sum is σ = 51105425120654. Its totient is φ = 51105425120652.

The previous prime is 51105425120641. The next prime is 51105425120803. The reversal of 51105425120653 is 35602152450115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33853057082244 + 17252368038409 = 5818338^2 + 4153597^2 .

It is a cyclic number.

It is not a de Polignac number, because 51105425120653 - 2¹³ = 51105425112461 is a prime.

It is a super-2 number, since 2×51105425120653² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51105425120623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25552712560326 + 25552712560327.

It is an arithmetic number, because the mean of its divisors is an integer number (25552712560327).

Almost surely, 2^{51105425120653} is an apocalyptic number.

It is an amenable number.

51105425120653 is a deficient number, since it is larger than the sum of its proper divisors (1).

51105425120653 is an equidigital number, since it uses as much as digits as its factorization.

51105425120653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180000, while the sum is 40.

Adding to 51105425120653 its reverse (35602152450115), we get a palindrome (86707577570768).

The spelling of 51105425120653 in words is "fifty-one trillion, one hundred five billion, four hundred twenty-five million, one hundred twenty thousand, six hundred fifty-three".