9778584962666 has 32 divisors (see below), whose sum is σ = 16498831265280. Its totient is φ = 4312812075264.

The previous prime is 9778584962633. The next prime is 9778584962723. The reversal of 9778584962666 is 6662694858779.

It is a super-2 number, since 2×9778584962666² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7247855 + ... + 8490498.

It is an arithmetic number, because the mean of its divisors is an integer number (515588477040).

Almost surely, 2^{9778584962666} is an apocalyptic number.

9778584962666 is a deficient number, since it is larger than the sum of its proper divisors (6720246302614).

9778584962666 is a wasteful number, since it uses less digits than its factorization.

9778584962666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15739430.

The product of its digits is 13168189440, while the sum is 83.

The spelling of 9778584962666 in words is "nine trillion, seven hundred seventy-eight billion, five hundred eighty-four million, nine hundred sixty-two thousand, six hundred sixty-six".