51212000703 has 16 divisors (see below), whose sum is σ = 68990382720. Its totient is φ = 33788120736.

The previous prime is 51212000689. The next prime is 51212000717. The reversal of 51212000703 is 30700021215.

51212000703 is a nontrivial binomial coefficient, being equal to C(320038, 2).

It is an interprime number because it is at equal distance from previous prime (51212000689) and next prime (51212000717).

It is not a de Polignac number, because 51212000703 - 2⁴ = 51212000687 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51212000703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51212000743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240028 + ... + 400046.

It is an arithmetic number, because the mean of its divisors is an integer number (4311898920).

Almost surely, 2^51212000703 is an apocalyptic number.

51212000703 is the 320037-th triangular number and also the 160019-th hexagonal number.

51212000703 is a deficient number, since it is larger than the sum of its proper divisors (17778382017).

51212000703 is a wasteful number, since it uses less digits than its factorization.

51212000703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161126.

The product of its (nonzero) digits is 420, while the sum is 21.

Adding to 51212000703 its reverse (30700021215), we get a palindrome (81912021918).

The spelling of 51212000703 in words is "fifty-one billion, two hundred twelve million, seven hundred three", and thus it is an aban number.