111672783945 has 20 divisors (see below), whose sum is σ = 200183806020. Its totient is φ = 59558817888.

The previous prime is 111672783931. The next prime is 111672783949. The reversal of 111672783945 is 549387276111.

111672783945 is a `hidden beast` number, since 1 + 116 + 72 + 78 + 394 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 54992126016 + 56680657929 = 234504^2 + 238077^2 .

It is not a de Polignac number, because 111672783945 - 2¹⁴ = 111672767561 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 111672783891 and 111672783900.

It is not an unprimeable number, because it can be changed into a prime (111672783949) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 137867230 + ... + 137868039.

It is an arithmetic number, because the mean of its divisors is an integer number (10009190301).

Almost surely, 2^111672783945 is an apocalyptic number.

111672783945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111672783945 is a deficient number, since it is larger than the sum of its proper divisors (88511022075).

111672783945 is an equidigital number, since it uses as much as digits as its factorization.

111672783945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275735286 (or 275735277 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The spelling of 111672783945 in words is "one hundred eleven billion, six hundred seventy-two million, seven hundred eighty-three thousand, nine hundred forty-five".