7809969785798 has 4 divisors (see below), whose sum is σ = 11714954678700. Its totient is φ = 3904984892898.

The previous prime is 7809969785791. The next prime is 7809969785833. The reversal of 7809969785798 is 8975879699087.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7809969785791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1952492446448 + ... + 1952492446451.

It is an arithmetic number, because the mean of its divisors is an integer number (2928738669675).

Almost surely, 2^{7809969785798} is an apocalyptic number.

7809969785798 is a deficient number, since it is larger than the sum of its proper divisors (3904984892902).

7809969785798 is a wasteful number, since it uses less digits than its factorization.

7809969785798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3904984892901.

The product of its (nonzero) digits is 34566497280, while the sum is 92.

The spelling of 7809969785798 in words is "seven trillion, eight hundred nine billion, nine hundred sixty-nine million, seven hundred eighty-five thousand, seven hundred ninety-eight".