6498797631839 has 2 divisors, whose sum is σ = 6498797631840. Its totient is φ = 6498797631838.

The previous prime is 6498797631721. The next prime is 6498797631841. The reversal of 6498797631839 is 9381367978946.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6498797631839 is a prime.

Together with 6498797631841, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6498797630839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3249398815919 + 3249398815920.

It is an arithmetic number, because the mean of its divisors is an integer number (3249398815920).

Almost surely, 2^{6498797631839} is an apocalyptic number.

6498797631839 is a deficient number, since it is larger than the sum of its proper divisors (1).

6498797631839 is an equidigital number, since it uses as much as digits as its factorization.

6498797631839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2962842624, while the sum is 80.

The spelling of 6498797631839 in words is "six trillion, four hundred ninety-eight billion, seven hundred ninety-seven million, six hundred thirty-one thousand, eight hundred thirty-nine".