427731200917 has 2 divisors, whose sum is σ = 427731200918. Its totient is φ = 427731200916.

The previous prime is 427731200803. The next prime is 427731200957. The reversal of 427731200917 is 719002137724.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 415604566276 + 12126634641 = 644674^2 + 110121^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-427731200917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427731200957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213865600458 + 213865600459.

It is an arithmetic number, because the mean of its divisors is an integer number (213865600459).

Almost surely, 2^427731200917 is an apocalyptic number.

It is an amenable number.

427731200917 is a deficient number, since it is larger than the sum of its proper divisors (1).

427731200917 is an equidigital number, since it uses as much as digits as its factorization.

427731200917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 148176, while the sum is 43.

The spelling of 427731200917 in words is "four hundred twenty-seven billion, seven hundred thirty-one million, two hundred thousand, nine hundred seventeen".