51105050061 has 16 divisors (see below), whose sum is σ = 73849017984. Its totient is φ = 31248944064.

The previous prime is 51105050039. The next prime is 51105050071. The reversal of 51105050061 is 16005050115.

It is not a de Polignac number, because 51105050061 - 2⁶ = 51105049997 is a prime.

It is a super-2 number, since 2×51105050061² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51105050011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4167081 + ... + 4179326.

It is an arithmetic number, because the mean of its divisors is an integer number (4615563624).

Almost surely, 2^51105050061 is an apocalyptic number.

It is an amenable number.

51105050061 is a deficient number, since it is larger than the sum of its proper divisors (22743967923).

51105050061 is a wasteful number, since it uses less digits than its factorization.

51105050061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8346580.

The product of its (nonzero) digits is 750, while the sum is 24.

The spelling of 51105050061 in words is "fifty-one billion, one hundred five million, fifty thousand, sixty-one".