51333467831 has 2 divisors, whose sum is σ = 51333467832. Its totient is φ = 51333467830.

The previous prime is 51333467789. The next prime is 51333467833. The reversal of 51333467831 is 13876433315.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51333467831 is a prime.

It is a super-2 number, since 2×51333467831² (a number of 22 digits) contains 22 as substring.

Together with 51333467833, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51333467833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25666733915 + 25666733916.

It is an arithmetic number, because the mean of its divisors is an integer number (25666733916).

Almost surely, 2^51333467831 is an apocalyptic number.

51333467831 is a deficient number, since it is larger than the sum of its proper divisors (1).

51333467831 is an equidigital number, since it uses as much as digits as its factorization.

51333467831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 44.

The spelling of 51333467831 in words is "fifty-one billion, three hundred thirty-three million, four hundred sixty-seven thousand, eight hundred thirty-one".