803991797679 has 24 divisors (see below), whose sum is σ = 1251749220480. Its totient is φ = 457677003504.

The previous prime is 803991797657. The next prime is 803991797683. The reversal of 803991797679 is 976797199308.

It is not a de Polignac number, because 803991797679 - 2⁵ = 803991797647 is a prime.

It is a super-2 number, since 2×803991797679² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 803991797679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (803991797629) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10359309 + ... + 10436630.

It is an arithmetic number, because the mean of its divisors is an integer number (52156217520).

Almost surely, 2^803991797679 is an apocalyptic number.

803991797679 is a deficient number, since it is larger than the sum of its proper divisors (447757422801).

803991797679 is a wasteful number, since it uses less digits than its factorization.

803991797679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20796219 (or 20796212 counting only the distinct ones).

The product of its (nonzero) digits is 324060912, while the sum is 75.

The spelling of 803991797679 in words is "eight hundred three billion, nine hundred ninety-one million, seven hundred ninety-seven thousand, six hundred seventy-nine".