1968657696966 has 64 divisors (see below), whose sum is σ = 4075901669376. Its totient is φ = 633549168000.

The previous prime is 1968657696947. The next prime is 1968657696979. The reversal of 1968657696966 is 6696967568691.

It is a super-2 number, since 2×1968657696966² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7591096 + ... + 7846148.

It is an arithmetic number, because the mean of its divisors is an integer number (63685963584).

Almost surely, 2^{1968657696966} is an apocalyptic number.

1968657696966 is an abundant number, since it is smaller than the sum of its proper divisors (2107243972410).

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

1968657696966 is a wasteful number, since it uses less digits than its factorization.

1968657696966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255477.

The product of its digits is 9523422720, while the sum is 84.

The spelling of 1968657696966 in words is "one trillion, nine hundred sixty-eight billion, six hundred fifty-seven million, six hundred ninety-six thousand, nine hundred sixty-six".