51111056011 has 2 divisors, whose sum is σ = 51111056012. Its totient is φ = 51111056010.

The previous prime is 51111055993. The next prime is 51111056027. The reversal of 51111056011 is 11065011115.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51111056011 - 2¹⁹ = 51110531723 is a prime.

It is a super-2 number, since 2×51111056011² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51111056071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25555528005 + 25555528006.

It is an arithmetic number, because the mean of its divisors is an integer number (25555528006).

Almost surely, 2^51111056011 is an apocalyptic number.

51111056011 is a deficient number, since it is larger than the sum of its proper divisors (1).

51111056011 is an equidigital number, since it uses as much as digits as its factorization.

51111056011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 150, while the sum is 22.

Adding to 51111056011 its reverse (11065011115), we get a palindrome (62176067126).

The spelling of 51111056011 in words is "fifty-one billion, one hundred eleven million, fifty-six thousand, eleven".