51061601673 has 24 divisors (see below), whose sum is σ = 74015824896. Its totient is φ = 33921201600.

The previous prime is 51061601663. The next prime is 51061601681. The reversal of 51061601673 is 37610616015.

51061601673 is a `hidden beast` number, since 510 + 6 + 1 + 60 + 16 + 73 = 666.

It is not a de Polignac number, because 51061601673 - 2⁸ = 51061601417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51061601663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3025368 + ... + 3042198.

It is an arithmetic number, because the mean of its divisors is an integer number (3083992704).

Almost surely, 2^51061601673 is an apocalyptic number.

It is an amenable number.

51061601673 is a deficient number, since it is larger than the sum of its proper divisors (22954223223).

51061601673 is a wasteful number, since it uses less digits than its factorization.

51061601673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18005 (or 18002 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The spelling of 51061601673 in words is "fifty-one billion, sixty-one million, six hundred one thousand, six hundred seventy-three".