1158771983965 has 8 divisors (see below), whose sum is σ = 1398852887040. Its totient is φ = 921466582992.

The previous prime is 1158771983819. The next prime is 1158771984023. The reversal of 1158771983965 is 5693891778511.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1158771983965 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1158771983894 and 1158771983903.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 693874605 + ... + 693876274.

It is an arithmetic number, because the mean of its divisors is an integer number (174856610880).

Almost surely, 2^{1158771983965} is an apocalyptic number.

It is an amenable number.

1158771983965 is a deficient number, since it is larger than the sum of its proper divisors (240080903075).

1158771983965 is a wasteful number, since it uses less digits than its factorization.

1158771983965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1387751051.

The product of its digits is 114307200, while the sum is 70.

The spelling of 1158771983965 in words is "one trillion, one hundred fifty-eight billion, seven hundred seventy-one million, nine hundred eighty-three thousand, nine hundred sixty-five".