51110561011 has 2 divisors, whose sum is σ = 51110561012. Its totient is φ = 51110561010.

The previous prime is 51110561003. The next prime is 51110561027. The reversal of 51110561011 is 11016501115.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51110561011 - 2³ = 51110561003 is a prime.

It is a super-2 number, since 2×51110561011² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51110561041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25555280505 + 25555280506.

It is an arithmetic number, because the mean of its divisors is an integer number (25555280506).

Almost surely, 2^51110561011 is an apocalyptic number.

51110561011 is a deficient number, since it is larger than the sum of its proper divisors (1).

51110561011 is an equidigital number, since it uses as much as digits as its factorization.

51110561011 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 51110561011 in words is "fifty-one billion, one hundred ten million, five hundred sixty-one thousand, eleven".