51232794269 has 2 divisors, whose sum is σ = 51232794270. Its totient is φ = 51232794268.

The previous prime is 51232794241. The next prime is 51232794409. The reversal of 51232794269 is 96249723215.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51189062500 + 43731769 = 226250^2 + 6613^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51232794269 is a prime.

It is a super-2 number, since 2×51232794269² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51232790269) 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, 25616397134 + 25616397135.

It is an arithmetic number, because the mean of its divisors is an integer number (25616397135).

Almost surely, 2^51232794269 is an apocalyptic number.

It is an amenable number.

51232794269 is a deficient number, since it is larger than the sum of its proper divisors (1).

51232794269 is an equidigital number, since it uses as much as digits as its factorization.

51232794269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 50.

The spelling of 51232794269 in words is "fifty-one billion, two hundred thirty-two million, seven hundred ninety-four thousand, two hundred sixty-nine".