51800102001 has 24 divisors (see below), whose sum is σ = 75145824936. Its totient is φ = 34384331520.

The previous prime is 51800101999. The next prime is 51800102033. The reversal of 51800102001 is 10020100815.

It can be written as a sum of positive squares in 4 ways, for example, as 22284518400 + 29515583601 = 149280^2 + 171801^2 .

It is not a de Polignac number, because 51800102001 - 2¹ = 51800101999 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51800102801) 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, 3105981 + ... + 3122613.

It is an arithmetic number, because the mean of its divisors is an integer number (3131076039).

Almost surely, 2^51800102001 is an apocalyptic number.

It is an amenable number.

51800102001 is a deficient number, since it is larger than the sum of its proper divisors (23345722935).

51800102001 is a wasteful number, since it uses less digits than its factorization.

51800102001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18113 (or 18110 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

Adding to 51800102001 its reverse (10020100815), we get a palindrome (61820202816).

The spelling of 51800102001 in words is "fifty-one billion, eight hundred million, one hundred two thousand, one".