51200000002 has 8 divisors (see below), whose sum is σ = 81317647116. Its totient is φ = 24094117632.

The previous prime is 51199999987. The next prime is 51200000003. The reversal of 51200000002 is 20000000215.

It can be written as a sum of positive squares in 2 ways, for example, as 46859693841 + 4340306161 = 216471^2 + 65881^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (51200000003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 752941143 + ... + 752941210.

Almost surely, 2^51200000002 is an apocalyptic number.

51200000002 is a deficient number, since it is larger than the sum of its proper divisors (30117647114).

51200000002 is a wasteful number, since it uses less digits than its factorization.

51200000002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505882372.

The product of its (nonzero) digits is 20, while the sum is 10.

Adding to 51200000002 its reverse (20000000215), we get a palindrome (71200000217).

The spelling of 51200000002 in words is "fifty-one billion, two hundred million, two", and thus it is an aban number.