7639649279959 has 2 divisors, whose sum is σ = 7639649279960. Its totient is φ = 7639649279958.

The previous prime is 7639649279957. The next prime is 7639649280019. The reversal of 7639649279959 is 9599729469367.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7639649279959 - 2¹ = 7639649279957 is a prime.

It is a super-2 number, since 2×7639649279959² (a number of 27 digits) contains 22 as substring.

Together with 7639649279957, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7639649279957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3819824639979 + 3819824639980.

It is an arithmetic number, because the mean of its divisors is an integer number (3819824639980).

Almost surely, 2^{7639649279959} is an apocalyptic number.

7639649279959 is a deficient number, since it is larger than the sum of its proper divisors (1).

7639649279959 is an equidigital number, since it uses as much as digits as its factorization.

7639649279959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12499492320, while the sum is 85.

The spelling of 7639649279959 in words is "seven trillion, six hundred thirty-nine billion, six hundred forty-nine million, two hundred seventy-nine thousand, nine hundred fifty-nine".