1178989122816 has 72 divisors (see below), whose sum is σ = 3486478271360. Its totient is φ = 392996371968.

The previous prime is 1178989122781. The next prime is 1178989122823. The reversal of 1178989122816 is 6182219898711.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×1178989122816² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85278760 + ... + 85292583.

Almost surely, 2^{1178989122816} is an apocalyptic number.

1178989122816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1178989122816 is an abundant number, since it is smaller than the sum of its proper divisors (2307489148544).

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

1178989122816 is an equidigital number, since it uses as much as digits as its factorization.

1178989122816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170571368 (or 170571348 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 63.

The spelling of 1178989122816 in words is "one trillion, one hundred seventy-eight billion, nine hundred eighty-nine million, one hundred twenty-two thousand, eight hundred sixteen".