51355365511 has 2 divisors, whose sum is σ = 51355365512. Its totient is φ = 51355365510.

The previous prime is 51355365491. The next prime is 51355365527. The reversal of 51355365511 is 11556355315.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51355365511 - 2¹¹ = 51355363463 is a prime.

It is a super-2 number, since 2×51355365511² (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 (51355365541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25677682755 + 25677682756.

It is an arithmetic number, because the mean of its divisors is an integer number (25677682756).

Almost surely, 2^51355365511 is an apocalyptic number.

51355365511 is a deficient number, since it is larger than the sum of its proper divisors (1).

51355365511 is an equidigital number, since it uses as much as digits as its factorization.

51355365511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 168750, while the sum is 40.

The spelling of 51355365511 in words is "fifty-one billion, three hundred fifty-five million, three hundred sixty-five thousand, five hundred eleven".