7839786730649 has 8 divisors (see below), whose sum is σ = 8026084688160. Its totient is φ = 7653669561216.

The previous prime is 7839786730537. The next prime is 7839786730703. The reversal of 7839786730649 is 9460376879387.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7839786730649 - 2⁸ = 7839786730393 is a prime.

It is a super-2 number, since 2×7839786730649² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7839786730649.

It is not an unprimeable number, because it can be changed into a prime (7839786730249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45109259 + ... + 45282720.

It is an arithmetic number, because the mean of its divisors is an integer number (1003260586020).

Almost surely, 2^{7839786730649} is an apocalyptic number.

It is an amenable number.

7839786730649 is a deficient number, since it is larger than the sum of its proper divisors (186297957511).

7839786730649 is a wasteful number, since it uses less digits than its factorization.

7839786730649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90394039.

The product of its (nonzero) digits is 2304433152, while the sum is 77.

The spelling of 7839786730649 in words is "seven trillion, eight hundred thirty-nine billion, seven hundred eighty-six million, seven hundred thirty thousand, six hundred forty-nine".