9081678787799 has 4 divisors (see below), whose sum is σ = 9087430327560. Its totient is φ = 9075927248040.

The previous prime is 9081678787793. The next prime is 9081678787837. The reversal of 9081678787799 is 9977878761809.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9081678787799 is a prime.

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 9081678787799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9081678787793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2875767512 + ... + 2875770669.

It is an arithmetic number, because the mean of its divisors is an integer number (2271857581890).

Almost surely, 2^{9081678787799} is an apocalyptic number.

9081678787799 is a deficient number, since it is larger than the sum of its proper divisors (5751539761).

9081678787799 is a wasteful number, since it uses less digits than its factorization.

9081678787799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5751539760.

The product of its (nonzero) digits is 5377010688, while the sum is 86.

The spelling of 9081678787799 in words is "nine trillion, eighty-one billion, six hundred seventy-eight million, seven hundred eighty-seven thousand, seven hundred ninety-nine".