51232794439 has 2 divisors, whose sum is σ = 51232794440. Its totient is φ = 51232794438.

The previous prime is 51232794421. The next prime is 51232794443. The reversal of 51232794439 is 93449723215.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51232794439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51232794392 and 51232794401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51232794409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25616397219 + 25616397220.

It is an arithmetic number, because the mean of its divisors is an integer number (25616397220).

Almost surely, 2^51232794439 is an apocalyptic number.

51232794439 is a deficient number, since it is larger than the sum of its proper divisors (1).

51232794439 is an equidigital number, since it uses as much as digits as its factorization.

51232794439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 49.

The spelling of 51232794439 in words is "fifty-one billion, two hundred thirty-two million, seven hundred ninety-four thousand, four hundred thirty-nine".