6638856714619 has 2 divisors, whose sum is σ = 6638856714620. Its totient is φ = 6638856714618.

The previous prime is 6638856714571. The next prime is 6638856714631. The reversal of 6638856714619 is 9164176588366.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6638856714619 - 2¹⁷ = 6638856583547 is a prime.

It is a super-2 number, since 2×6638856714619² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6638856715619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3319428357309 + 3319428357310.

It is an arithmetic number, because the mean of its divisors is an integer number (3319428357310).

Almost surely, 2^{6638856714619} is an apocalyptic number.

6638856714619 is a deficient number, since it is larger than the sum of its proper divisors (1).

6638856714619 is an equidigital number, since it uses as much as digits as its factorization.

6638856714619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 313528320, while the sum is 70.

The spelling of 6638856714619 in words is "six trillion, six hundred thirty-eight billion, eight hundred fifty-six million, seven hundred fourteen thousand, six hundred nineteen".