1161965781676 has 24 divisors (see below), whose sum is σ = 2337364703520. Its totient is φ = 495106804992.

The previous prime is 1161965781659. The next prime is 1161965781703. The reversal of 1161965781676 is 6761875691611.

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, 119933821 + ... + 119943508.

It is an arithmetic number, because the mean of its divisors is an integer number (97390195980).

Almost surely, 2^{1161965781676} is an apocalyptic number.

It is an amenable number.

1161965781676 is an abundant number, since it is smaller than the sum of its proper divisors (1175398921844).

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

1161965781676 is a wasteful number, since it uses less digits than its factorization.

1161965781676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239877513 (or 239877511 counting only the distinct ones).

The product of its digits is 22861440, while the sum is 64.

The spelling of 1161965781676 in words is "one trillion, one hundred sixty-one billion, nine hundred sixty-five million, seven hundred eighty-one thousand, six hundred seventy-six".