51800102002 has 64 divisors (see below), whose sum is σ = 92430979200. Its totient is φ = 21517056000.

The previous prime is 51800101999. The next prime is 51800102033. The reversal of 51800102002 is 20020100815.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1508302 + ... + 1542262.

It is an arithmetic number, because the mean of its divisors is an integer number (1444234050).

Almost surely, 2^51800102002 is an apocalyptic number.

51800102002 is a deficient number, since it is larger than the sum of its proper divisors (40630877198).

51800102002 is a wasteful number, since it uses less digits than its factorization.

51800102002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34123.

The product of its (nonzero) digits is 160, while the sum is 19.

Adding to 51800102002 its reverse (20020100815), we get a palindrome (71820202817).

The spelling of 51800102002 in words is "fifty-one billion, eight hundred million, one hundred two thousand, two".