6478502149979 has 2 divisors, whose sum is σ = 6478502149980. Its totient is φ = 6478502149978.

The previous prime is 6478502149967. The next prime is 6478502149981. The reversal of 6478502149979 is 9799412058746.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6478502149979 - 2⁴ = 6478502149963 is a prime.

It is a super-3 number, since 3×6478502149979³ (a number of 39 digits) contains 333 as substring.

Together with 6478502149981, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6478502119979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3239251074989 + 3239251074990.

It is an arithmetic number, because the mean of its divisors is an integer number (3239251074990).

Almost surely, 2^{6478502149979} is an apocalyptic number.

6478502149979 is a deficient number, since it is larger than the sum of its proper divisors (1).

6478502149979 is an equidigital number, since it uses as much as digits as its factorization.

6478502149979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 274337280, while the sum is 71.

The spelling of 6478502149979 in words is "six trillion, four hundred seventy-eight billion, five hundred two million, one hundred forty-nine thousand, nine hundred seventy-nine".