9731420465539 has 2 divisors, whose sum is σ = 9731420465540. Its totient is φ = 9731420465538.

The previous prime is 9731420465537. The next prime is 9731420465563. The reversal of 9731420465539 is 9355640241379.

It is a weak prime.

It is an emirp because it is prime and its reverse (9355640241379) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9731420465539 - 2¹ = 9731420465537 is a prime.

It is a super-2 number, since 2×9731420465539² (a number of 27 digits) contains 22 as substring.

Together with 9731420465537, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (9731420465537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4865710232769 + 4865710232770.

It is an arithmetic number, because the mean of its divisors is an integer number (4865710232770).

Almost surely, 2^{9731420465539} is an apocalyptic number.

9731420465539 is a deficient number, since it is larger than the sum of its proper divisors (1).

9731420465539 is an equidigital number, since it uses as much as digits as its factorization.

9731420465539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24494400, while the sum is 58.

The spelling of 9731420465539 in words is "nine trillion, seven hundred thirty-one billion, four hundred twenty million, four hundred sixty-five thousand, five hundred thirty-nine".