79003968649 has 8 divisors (see below), whose sum is σ = 82646541000. Its totient is φ = 75422616192.

The previous prime is 79003968623. The next prime is 79003968653. The reversal of 79003968649 is 94686930097.

It can be written as a sum of positive squares in 4 ways, for example, as 17155760400 + 61848208249 = 130980^2 + 248693^2 .

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 79003968649 - 2¹³ = 79003960457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79003968619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15302334 + ... + 15307495.

It is an arithmetic number, because the mean of its divisors is an integer number (10330817625).

Almost surely, 2^79003968649 is an apocalyptic number.

It is an amenable number.

79003968649 is a deficient number, since it is larger than the sum of its proper divisors (3642572351).

79003968649 is a wasteful number, since it uses less digits than its factorization.

79003968649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30609947.

The product of its (nonzero) digits is 17635968, while the sum is 61.

The spelling of 79003968649 in words is "seventy-nine billion, three million, nine hundred sixty-eight thousand, six hundred forty-nine".