51110101061 has 32 divisors (see below), whose sum is σ = 59486918400. Its totient is φ = 43557212160.

The previous prime is 51110101057. The next prime is 51110101079. The reversal of 51110101061 is 16010101115.

It is a cyclic number.

It is not a de Polignac number, because 51110101061 - 2² = 51110101057 is a prime.

It is a super-2 number, since 2×51110101061² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51110101001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18727145 + ... + 18729873.

It is an arithmetic number, because the mean of its divisors is an integer number (1858966200).

Almost surely, 2^51110101061 is an apocalyptic number.

It is an amenable number.

51110101061 is a deficient number, since it is larger than the sum of its proper divisors (8376817339).

51110101061 is a wasteful number, since it uses less digits than its factorization.

51110101061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5309.

The product of its (nonzero) digits is 30, while the sum is 17.

Adding to 51110101061 its reverse (16010101115), we get a palindrome (67120202176).

The spelling of 51110101061 in words is "fifty-one billion, one hundred ten million, one hundred one thousand, sixty-one".