7790917665665 has 8 divisors (see below), whose sum is σ = 9349325868480. Its totient is φ = 6232584352752.

The previous prime is 7790917665653. The next prime is 7790917665677. The reversal of 7790917665665 is 5665667190977.

It is an interprime number because it is at equal distance from previous prime (7790917665653) and next prime (7790917665677).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7790917665665 - 2³² = 7786622698369 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7790917665592 and 7790917665601.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18493349 + ... + 18909938.

It is an arithmetic number, because the mean of its divisors is an integer number (1168665733560).

Almost surely, 2^{7790917665665} is an apocalyptic number.

It is an amenable number.

7790917665665 is a deficient number, since it is larger than the sum of its proper divisors (1558408202815).

7790917665665 is a wasteful number, since it uses less digits than its factorization.

7790917665665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37444951.

The product of its (nonzero) digits is 900169200, while the sum is 74.

The spelling of 7790917665665 in words is "seven trillion, seven hundred ninety billion, nine hundred seventeen million, six hundred sixty-five thousand, six hundred sixty-five".