2079817656 has 96 divisors (see below), whose sum is σ = 6107955840. Its totient is φ = 578109312.

The previous prime is 2079817639. The next prime is 2079817667. The reversal of 2079817656 is 6567189702.

It is a junction number, because it is equal to n+sod(n) for n = 2079817599 and 2079817608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 225471 + ... + 234513.

It is an arithmetic number, because the mean of its divisors is an integer number (63624540).

Almost surely, 2^2079817656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2079817656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3053977920).

2079817656 is an abundant number, since it is smaller than the sum of its proper divisors (4028138184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2079817656 is a wasteful number, since it uses less digits than its factorization.

2079817656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9133 (or 9092 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 51.

The square root of 2079817656 is about 45605.0178818077. The cubic root of 2079817656 is about 1276.4635570356.

The spelling of 2079817656 in words is "two billion, seventy-nine million, eight hundred seventeen thousand, six hundred fifty-six".