39516949999 has 2 divisors, whose sum is σ = 39516950000. Its totient is φ = 39516949998.

The previous prime is 39516949961. The next prime is 39516950051. The reversal of 39516949999 is 99994961593.

It is a weak prime.

It is an emirp because it is prime and its reverse (99994961593) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39516949999 is a prime.

It is a super-2 number, since 2×39516949999² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39516949909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19758474999 + 19758475000.

It is an arithmetic number, because the mean of its divisors is an integer number (19758475000).

Almost surely, 2^39516949999 is an apocalyptic number.

39516949999 is a deficient number, since it is larger than the sum of its proper divisors (1).

39516949999 is an equidigital number, since it uses as much as digits as its factorization.

39516949999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 191318760, while the sum is 73.

It can be divided in two parts, 3951694 and 9999, that added together give a palindrome (3961693).

The spelling of 39516949999 in words is "thirty-nine billion, five hundred sixteen million, nine hundred forty-nine thousand, nine hundred ninety-nine".