51513676211 has 2 divisors, whose sum is σ = 51513676212. Its totient is φ = 51513676210.

The previous prime is 51513676177. The next prime is 51513676217. The reversal of 51513676211 is 11267631515.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51513676211 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (51513676217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25756838105 + 25756838106.

It is an arithmetic number, because the mean of its divisors is an integer number (25756838106).

Almost surely, 2^51513676211 is an apocalyptic number.

51513676211 is a deficient number, since it is larger than the sum of its proper divisors (1).

51513676211 is an equidigital number, since it uses as much as digits as its factorization.

51513676211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37800, while the sum is 38.

The spelling of 51513676211 in words is "fifty-one billion, five hundred thirteen million, six hundred seventy-six thousand, two hundred eleven".