51135508063 has 2 divisors, whose sum is σ = 51135508064. Its totient is φ = 51135508062.

The previous prime is 51135508001. The next prime is 51135508087. The reversal of 51135508063 is 36080553115.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51135508063 is a prime.

It is a super-2 number, since 2×51135508063² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51135508363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25567754031 + 25567754032.

It is an arithmetic number, because the mean of its divisors is an integer number (25567754032).

Almost surely, 2^51135508063 is an apocalyptic number.

51135508063 is a deficient number, since it is larger than the sum of its proper divisors (1).

51135508063 is an equidigital number, since it uses as much as digits as its factorization.

51135508063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54000, while the sum is 37.

The spelling of 51135508063 in words is "fifty-one billion, one hundred thirty-five million, five hundred eight thousand, sixty-three".