51340423135387 has 2 divisors, whose sum is σ = 51340423135388. Its totient is φ = 51340423135386.

The previous prime is 51340423135373. The next prime is 51340423135403. The reversal of 51340423135387 is 78353132404315.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51340423135387 - 2⁷ = 51340423135259 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51340423135387.

It is not a weakly prime, because it can be changed into another prime (51340423135307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25670211567693 + 25670211567694.

It is an arithmetic number, because the mean of its divisors is an integer number (25670211567694).

Almost surely, 2^{51340423135387} is an apocalyptic number.

51340423135387 is a deficient number, since it is larger than the sum of its proper divisors (1).

51340423135387 is an equidigital number, since it uses as much as digits as its factorization.

51340423135387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3628800, while the sum is 49.

The spelling of 51340423135387 in words is "fifty-one trillion, three hundred forty billion, four hundred twenty-three million, one hundred thirty-five thousand, three hundred eighty-seven".