51265370573 has 2 divisors, whose sum is σ = 51265370574. Its totient is φ = 51265370572.

The previous prime is 51265370557. The next prime is 51265370593. The reversal of 51265370573 is 37507356215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37355998729 + 13909371844 = 193277^2 + 117938^2 .

It is a cyclic number.

It is not a de Polignac number, because 51265370573 - 2⁴ = 51265370557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51265370593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25632685286 + 25632685287.

It is an arithmetic number, because the mean of its divisors is an integer number (25632685287).

Almost surely, 2^51265370573 is an apocalyptic number.

It is an amenable number.

51265370573 is a deficient number, since it is larger than the sum of its proper divisors (1).

51265370573 is an equidigital number, since it uses as much as digits as its factorization.

51265370573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 661500, while the sum is 44.

The spelling of 51265370573 in words is "fifty-one billion, two hundred sixty-five million, three hundred seventy thousand, five hundred seventy-three".