8420795616679 has 4 divisors (see below), whose sum is σ = 8421986852440. Its totient is φ = 8419604380920.

The previous prime is 8420795616619. The next prime is 8420795616691. The reversal of 8420795616679 is 9766165970248.

It is a happy number.

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-8420795616679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8420795616619) 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, 595607277 + ... + 595621414.

It is an arithmetic number, because the mean of its divisors is an integer number (2105496713110).

Almost surely, 2^{8420795616679} is an apocalyptic number.

8420795616679 is a deficient number, since it is larger than the sum of its proper divisors (1191235761).

8420795616679 is a wasteful number, since it uses less digits than its factorization.

8420795616679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1191235760.

The product of its (nonzero) digits is 274337280, while the sum is 70.

The spelling of 8420795616679 in words is "eight trillion, four hundred twenty billion, seven hundred ninety-five million, six hundred sixteen thousand, six hundred seventy-nine".