51333467789 has 2 divisors, whose sum is σ = 51333467790. Its totient is φ = 51333467788.

The previous prime is 51333467771. The next prime is 51333467831. The reversal of 51333467789 is 98776433315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28142746564 + 23190721225 = 167758^2 + 152285^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51333467789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51333467719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25666733894 + 25666733895.

It is an arithmetic number, because the mean of its divisors is an integer number (25666733895).

Almost surely, 2^51333467789 is an apocalyptic number.

It is an amenable number.

51333467789 is a deficient number, since it is larger than the sum of its proper divisors (1).

51333467789 is an equidigital number, since it uses as much as digits as its factorization.

51333467789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11430720, while the sum is 56.

The spelling of 51333467789 in words is "fifty-one billion, three hundred thirty-three million, four hundred sixty-seven thousand, seven hundred eighty-nine".