7998673690691 has 4 divisors (see below), whose sum is σ = 8001150830400. Its totient is φ = 7996196550984.

The previous prime is 7998673690673. The next prime is 7998673690741. The reversal of 7998673690691 is 1960963768997.

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-7998673690691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7998673690591) 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, 1238565011 + ... + 1238571468.

It is an arithmetic number, because the mean of its divisors is an integer number (2000287707600).

Almost surely, 2^{7998673690691} is an apocalyptic number.

7998673690691 is a deficient number, since it is larger than the sum of its proper divisors (2477139709).

7998673690691 is a wasteful number, since it uses less digits than its factorization.

7998673690691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2477139708.

The product of its (nonzero) digits is 1666598976, while the sum is 80.

The spelling of 7998673690691 in words is "seven trillion, nine hundred ninety-eight billion, six hundred seventy-three million, six hundred ninety thousand, six hundred ninety-one".