7798784547799 has 32 divisors (see below), whose sum is σ = 9483209415680. Its totient is φ = 6264660310272.

The previous prime is 7798784547797. The next prime is 7798784547809. The reversal of 7798784547799 is 9977454878977.

It is a happy number.

It is not a de Polignac number, because 7798784547799 - 2¹ = 7798784547797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7798784547797) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12532177 + ... + 13139749.

It is an arithmetic number, because the mean of its divisors is an integer number (296350294240).

Almost surely, 2^{7798784547799} is an apocalyptic number.

7798784547799 is a deficient number, since it is larger than the sum of its proper divisors (1684424867881).

7798784547799 is a wasteful number, since it uses less digits than its factorization.

7798784547799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608639.

The product of its digits is 62731791360, while the sum is 91.

The spelling of 7798784547799 in words is "seven trillion, seven hundred ninety-eight billion, seven hundred eighty-four million, five hundred forty-seven thousand, seven hundred ninety-nine".