51203236430 has 16 divisors (see below), whose sum is σ = 92891543040. Its totient is φ = 20320024032.

The previous prime is 51203236417. The next prime is 51203236457. The reversal of 51203236430 is 3463230215.

It is a junction number, because it is equal to n+sod(n) for n = 51203236393 and 51203236402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20157485 + ... + 20160024.

It is an arithmetic number, because the mean of its divisors is an integer number (5805721440).

Almost surely, 2^51203236430 is an apocalyptic number.

51203236430 is a deficient number, since it is larger than the sum of its proper divisors (41688306610).

51203236430 is a wasteful number, since it uses less digits than its factorization.

51203236430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40317643.

The product of its (nonzero) digits is 12960, while the sum is 29.

Adding to 51203236430 its reverse (3463230215), we get a palindrome (54666466645).

The spelling of 51203236430 in words is "fifty-one billion, two hundred three million, two hundred thirty-six thousand, four hundred thirty".