111778835366980 has 24 divisors (see below), whose sum is σ = 234778633147800. Its totient is φ = 44703328646400.

The previous prime is 111778835366929. The next prime is 111778835366983. The reversal of 111778835366980 is 89663538877111.

It can be written as a sum of positive squares in 4 ways, for example, as 13440831798276 + 98338003568704 = 3666174^2 + 9916552^2 .

It is not an unprimeable number, because it can be changed into a prime (111778835366983) by changing a digit.

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, 512732071 + ... + 512950030.

It is an arithmetic number, because the mean of its divisors is an integer number (9782443047825).

Almost surely, 2^{111778835366980} is an apocalyptic number.

111778835366980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111778835366980 is an abundant number, since it is smaller than the sum of its proper divisors (122999797780820).

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

111778835366980 is a wasteful number, since it uses less digits than its factorization.

111778835366980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1025687559 (or 1025687557 counting only the distinct ones).

The product of its (nonzero) digits is 365783040, while the sum is 73.

The spelling of 111778835366980 in words is "one hundred eleven trillion, seven hundred seventy-eight billion, eight hundred thirty-five million, three hundred sixty-six thousand, nine hundred eighty".