51186301673 has 16 divisors (see below), whose sum is σ = 55828328976. Its totient is φ = 46648197120.

The previous prime is 51186301667. The next prime is 51186301693. The reversal of 51186301673 is 37610368115.

It can be written as a sum of positive squares in 8 ways, for example, as 2727763984 + 48458537689 = 52228^2 + 220133^2 .

It is a cyclic number.

It is not a de Polignac number, because 51186301673 - 2⁸ = 51186301417 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51186301673.

It is not an unprimeable number, because it can be changed into a prime (51186301603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 309743 + ... + 445323.

It is an arithmetic number, because the mean of its divisors is an integer number (3489270561).

Almost surely, 2^51186301673 is an apocalyptic number.

It is an amenable number.

51186301673 is a deficient number, since it is larger than the sum of its proper divisors (4642027303).

51186301673 is a wasteful number, since it uses less digits than its factorization.

51186301673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135964.

The product of its (nonzero) digits is 90720, while the sum is 41.

Adding to 51186301673 its reverse (37610368115), we get a palindrome (88796669788).

The spelling of 51186301673 in words is "fifty-one billion, one hundred eighty-six million, three hundred one thousand, six hundred seventy-three".