51061005011 has 2 divisors, whose sum is σ = 51061005012. Its totient is φ = 51061005010.

The previous prime is 51061004999. The next prime is 51061005059. The reversal of 51061005011 is 11050016015.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51061005011 is a prime.

It is a super-2 number, since 2×51061005011² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51061005071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25530502505 + 25530502506.

It is an arithmetic number, because the mean of its divisors is an integer number (25530502506).

Almost surely, 2^51061005011 is an apocalyptic number.

51061005011 is a deficient number, since it is larger than the sum of its proper divisors (1).

51061005011 is an equidigital number, since it uses as much as digits as its factorization.

51061005011 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 20.

The spelling of 51061005011 in words is "fifty-one billion, sixty-one million, five thousand, eleven".