1116959791978 has 4 divisors (see below), whose sum is σ = 1675439687970. Its totient is φ = 558479895988.

The previous prime is 1116959791973. The next prime is 1116959792017. The reversal of 1116959791978 is 8791979596111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1078654647889 + 38305144089 = 1038583^2 + 195717^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1116959791978.

It is not an unprimeable number, because it can be changed into a prime (1116959791973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 279239947993 + ... + 279239947996.

Almost surely, 2^{1116959791978} is an apocalyptic number.

1116959791978 is a deficient number, since it is larger than the sum of its proper divisors (558479895992).

1116959791978 is an equidigital number, since it uses as much as digits as its factorization.

1116959791978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558479895991.

The product of its digits is 77157360, while the sum is 73.

The spelling of 1116959791978 in words is "one trillion, one hundred sixteen billion, nine hundred fifty-nine million, seven hundred ninety-one thousand, nine hundred seventy-eight".