9847131864139 has 2 divisors, whose sum is σ = 9847131864140. Its totient is φ = 9847131864138.

The previous prime is 9847131864137. The next prime is 9847131864197. The reversal of 9847131864139 is 9314681317489.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9847131864139 - 2¹ = 9847131864137 is a prime.

It is a super-2 number, since 2×9847131864139² (a number of 27 digits) contains 22 as substring.

Together with 9847131864137, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (9847131864137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4923565932069 + 4923565932070.

It is an arithmetic number, because the mean of its divisors is an integer number (4923565932070).

Almost surely, 2^{9847131864139} is an apocalyptic number.

9847131864139 is a deficient number, since it is larger than the sum of its proper divisors (1).

9847131864139 is an equidigital number, since it uses as much as digits as its factorization.

9847131864139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31352832, while the sum is 64.

The spelling of 9847131864139 in words is "nine trillion, eight hundred forty-seven billion, one hundred thirty-one million, eight hundred sixty-four thousand, one hundred thirty-nine".