111666873560 has 32 divisors (see below), whose sum is σ = 274091418000. Its totient is φ = 40606135680.

The previous prime is 111666873559. The next prime is 111666873581. The reversal of 111666873560 is 65378666111.

It is a junction number, because it is equal to n+sod(n) for n = 111666873499 and 111666873508.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 126893735 + ... + 126894614.

Almost surely, 2^111666873560 is an apocalyptic number.

111666873560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111666873560 is an abundant number, since it is smaller than the sum of its proper divisors (162424544440).

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

111666873560 is a wasteful number, since it uses less digits than its factorization.

111666873560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253788371 (or 253788367 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 111666873560 in words is "one hundred eleven billion, six hundred sixty-six million, eight hundred seventy-three thousand, five hundred sixty".