51264630651253 has 2 divisors, whose sum is σ = 51264630651254. Its totient is φ = 51264630651252.

The previous prime is 51264630651197. The next prime is 51264630651323. The reversal of 51264630651253 is 35215603646215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47622117170884 + 3642513480369 = 6900878^2 + 1908537^2 .

It is a cyclic number.

It is not a de Polignac number, because 51264630651253 - 2²¹ = 51264628554101 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51264630651197 and 51264630651206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51264430651253) 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 as a sum of consecutive naturals, namely, 25632315325626 + 25632315325627.

It is an arithmetic number, because the mean of its divisors is an integer number (25632315325627).

Almost surely, 2^{51264630651253} is an apocalyptic number.

It is an amenable number.

51264630651253 is a deficient number, since it is larger than the sum of its proper divisors (1).

51264630651253 is an equidigital number, since it uses as much as digits as its factorization.

51264630651253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888000, while the sum is 49.

The spelling of 51264630651253 in words is "fifty-one trillion, two hundred sixty-four billion, six hundred thirty million, six hundred fifty-one thousand, two hundred fifty-three".