7800608803849 has 3 divisors (see below), whose sum is σ = 7800611596807. Its totient is φ = 7800606010892.

The previous prime is 7800608803811. The next prime is 7800608803873. The reversal of 7800608803849 is 9483088060087.

The square root of 7800608803849 is 2792957.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 7718200767225 + 82408036624 = 2778165^2 + 287068^2 .

It is not a de Polignac number, because 7800608803849 - 2⁴¹ = 5601585548297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7800608803549) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1396479 + ... + 4189435.

Almost surely, 2^{7800608803849} is an apocalyptic number.

7800608803849 is the 2792957-th square number.

7800608803849 is the 1396479-th centered octagonal number.

It is an amenable number.

7800608803849 is a deficient number, since it is larger than the sum of its proper divisors (2792958).

7800608803849 is an frugal number, since it uses more digits than its factorization.

7800608803849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5585914 (or 2792957 counting only the distinct ones).

The product of its (nonzero) digits is 18579456, while the sum is 61.

The spelling of 7800608803849 in words is "seven trillion, eight hundred billion, six hundred eight million, eight hundred three thousand, eight hundred forty-nine".