51233443215203 has 4 divisors (see below), whose sum is σ = 51233772079248. Its totient is φ = 51233114351160.

The previous prime is 51233443215167. The next prime is 51233443215233. The reversal of 51233443215203 is 30251234433215.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51233443215203 - 2²² = 51233439020899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51233443215233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164198228 + ... + 164509953.

It is an arithmetic number, because the mean of its divisors is an integer number (12808443019812).

Almost surely, 2^{51233443215203} is an apocalyptic number.

51233443215203 is a deficient number, since it is larger than the sum of its proper divisors (328864045).

51233443215203 is a wasteful number, since it uses less digits than its factorization.

51233443215203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328864044.

The product of its (nonzero) digits is 259200, while the sum is 38.

Adding to 51233443215203 its reverse (30251234433215), we get a palindrome (81484677648418).

The spelling of 51233443215203 in words is "fifty-one trillion, two hundred thirty-three billion, four hundred forty-three million, two hundred fifteen thousand, two hundred three".