39516318979 has 2 divisors, whose sum is σ = 39516318980. Its totient is φ = 39516318978.

The previous prime is 39516318953. The next prime is 39516318991. The reversal of 39516318979 is 97981361593.

It is a strong prime.

It is an emirp because it is prime and its reverse (97981361593) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39516318979 - 2⁹ = 39516318467 is a prime.

It is not a weakly prime, because it can be changed into another prime (39516318949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19758159489 + 19758159490.

It is an arithmetic number, because the mean of its divisors is an integer number (19758159490).

Almost surely, 2^39516318979 is an apocalyptic number.

39516318979 is a deficient number, since it is larger than the sum of its proper divisors (1).

39516318979 is an equidigital number, since it uses as much as digits as its factorization.

39516318979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11022480, while the sum is 61.

The spelling of 39516318979 in words is "thirty-nine billion, five hundred sixteen million, three hundred eighteen thousand, nine hundred seventy-nine".