51447700678747 has 2 divisors, whose sum is σ = 51447700678748. Its totient is φ = 51447700678746.

The previous prime is 51447700678679. The next prime is 51447700678753. The reversal of 51447700678747 is 74787600774415.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51447700678747 is a prime.

It is not a weakly prime, because it can be changed into another prime (51447707678747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25723850339373 + 25723850339374.

It is an arithmetic number, because the mean of its divisors is an integer number (25723850339374).

Almost surely, 2^{51447700678747} is an apocalyptic number.

51447700678747 is a deficient number, since it is larger than the sum of its proper divisors (1).

51447700678747 is an equidigital number, since it uses as much as digits as its factorization.

51447700678747 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 258155520, while the sum is 67.

The spelling of 51447700678747 in words is "fifty-one trillion, four hundred forty-seven billion, seven hundred million, six hundred seventy-eight thousand, seven hundred forty-seven".